diff --git a/core/dr-film/profiles/ilford_delta_100.yaml b/core/dr-film/profiles/ilford_delta_100.yaml
new file mode 100644
index 0000000..b166cbe
--- /dev/null
+++ b/core/dr-film/profiles/ilford_delta_100.yaml
@@ -0,0 +1,459 @@
+# Generated by tools/film-profiles/convert.py.
+#
+# *** CONSTRUCTED, NOT MEASURED. ***
+#
+# Ilford publish this film's spectral sensitivity and characteristic
+# curve as graphs, and no granularity figure at all, so this profile is
+# built rather than extracted. Its speed is the published ISO rating,
+# and its contrast is ISO 6:1993's normal development (average gradient
+# 0.62). Its spectral response is borrowed from Kodak Double-X, a
+# *measured* panchromatic negative, shifted by the speed difference.
+# Its granularity is an estimate, ordered against the other films here.
+#
+# So it renders as a film of this speed and contrast, not as a
+# measurement of this emulsion. Replace it outright if anyone digitises
+# the real curves.
+
+version: 'constructed-1'
+stock: ilford_delta_100
+name: 'Ilford Delta 100'
+kind: negative          # negative | positive
+support: film    # film | paper
+stage: filming        # filming | printing
+monochrome: true
+reference_illuminant: D55
+viewing_illuminant: D50
+
+rms_granularity: [6, 6, 6]
+
+# log10 spectral sensitivity per layer, 380-780nm at 5nm.
+log_sensitivity:
+  - [-9, -9, -9]   # 380nm
+  - [-9, -9, -9]   # 385nm
+  - [-9, -9, -9]   # 390nm
+  - [-9, -9, -9]   # 395nm
+  - [-9, -9, -9]   # 400nm
+  - [-9, -9, -9]   # 405nm
+  - [-9, -9, -9]   # 410nm
+  - [-9, -9, -9]   # 415nm
+  - [-9, -9, -9]   # 420nm
+  - [-1.11516, -1.11516, -1.11516]   # 425nm
+  - [-1.1149, -1.1149, -1.1149]   # 430nm
+  - [-1.1149, -1.1149, -1.1149]   # 435nm
+  - [-1.11525, -1.11525, -1.11525]   # 440nm
+  - [-1.12495, -1.12495, -1.12495]   # 445nm
+  - [-1.13768, -1.13768, -1.13768]   # 450nm
+  - [-1.15447, -1.15447, -1.15447]   # 455nm
+  - [-1.17373, -1.17373, -1.17373]   # 460nm
+  - [-1.19518, -1.19518, -1.19518]   # 465nm
+  - [-1.21361, -1.21361, -1.21361]   # 470nm
+  - [-1.2395, -1.2395, -1.2395]   # 475nm
+  - [-1.26728, -1.26728, -1.26728]   # 480nm
+  - [-1.30522, -1.30522, -1.30522]   # 485nm
+  - [-1.34497, -1.34497, -1.34497]   # 490nm
+  - [-1.38465, -1.38465, -1.38465]   # 495nm
+  - [-1.41792, -1.41792, -1.41792]   # 500nm
+  - [-1.4332, -1.4332, -1.4332]   # 505nm
+  - [-1.43637, -1.43637, -1.43637]   # 510nm
+  - [-1.43566, -1.43566, -1.43566]   # 515nm
+  - [-1.42589, -1.42589, -1.42589]   # 520nm
+  - [-1.41287, -1.41287, -1.41287]   # 525nm
+  - [-1.3981, -1.3981, -1.3981]   # 530nm
+  - [-1.38014, -1.38014, -1.38014]   # 535nm
+  - [-1.36192, -1.36192, -1.36192]   # 540nm
+  - [-1.34305, -1.34305, -1.34305]   # 545nm
+  - [-1.32648, -1.32648, -1.32648]   # 550nm
+  - [-1.30871, -1.30871, -1.30871]   # 555nm
+  - [-1.29546, -1.29546, -1.29546]   # 560nm
+  - [-1.28805, -1.28805, -1.28805]   # 565nm
+  - [-1.28317, -1.28317, -1.28317]   # 570nm
+  - [-1.27961, -1.27961, -1.27961]   # 575nm
+  - [-1.28242, -1.28242, -1.28242]   # 580nm
+  - [-1.28885, -1.28885, -1.28885]   # 585nm
+  - [-1.29837, -1.29837, -1.29837]   # 590nm
+  - [-1.31101, -1.31101, -1.31101]   # 595nm
+  - [-1.32288, -1.32288, -1.32288]   # 600nm
+  - [-1.33805, -1.33805, -1.33805]   # 605nm
+  - [-1.35316, -1.35316, -1.35316]   # 610nm
+  - [-1.35819, -1.35819, -1.35819]   # 615nm
+  - [-1.34978, -1.34978, -1.34978]   # 620nm
+  - [-1.35875, -1.35875, -1.35875]   # 625nm
+  - [-1.38789, -1.38789, -1.38789]   # 630nm
+  - [-1.47825, -1.47825, -1.47825]   # 635nm
+  - [-1.66767, -1.66767, -1.66767]   # 640nm
+  - [-1.88331, -1.88331, -1.88331]   # 645nm
+  - [-2.13893, -2.13893, -2.13893]   # 650nm
+  - [-2.40079, -2.40079, -2.40079]   # 655nm
+  - [-2.66866, -2.66866, -2.66866]   # 660nm
+  - [-9, -9, -9]   # 665nm
+  - [-9, -9, -9]   # 670nm
+  - [-9, -9, -9]   # 675nm
+  - [-9, -9, -9]   # 680nm
+  - [-9, -9, -9]   # 685nm
+  - [-9, -9, -9]   # 690nm
+  - [-9, -9, -9]   # 695nm
+  - [-9, -9, -9]   # 700nm
+  - [-9, -9, -9]   # 705nm
+  - [-9, -9, -9]   # 710nm
+  - [-9, -9, -9]   # 715nm
+  - [-9, -9, -9]   # 720nm
+  - [-9, -9, -9]   # 725nm
+  - [-9, -9, -9]   # 730nm
+  - [-9, -9, -9]   # 735nm
+  - [-9, -9, -9]   # 740nm
+  - [-9, -9, -9]   # 745nm
+  - [-9, -9, -9]   # 750nm
+  - [-9, -9, -9]   # 755nm
+  - [-9, -9, -9]   # 760nm
+  - [-9, -9, -9]   # 765nm
+  - [-9, -9, -9]   # 770nm
+  - [-9, -9, -9]   # 775nm
+  - [-9, -9, -9]   # 780nm
+
+# Developed silver: neutral across the band.
+dye_density:
+  - [0.333333, 0.333333, 0.333333]   # 380nm
+  - [0.333333, 0.333333, 0.333333]   # 385nm
+  - [0.333333, 0.333333, 0.333333]   # 390nm
+  - [0.333333, 0.333333, 0.333333]   # 395nm
+  - [0.333333, 0.333333, 0.333333]   # 400nm
+  - [0.333333, 0.333333, 0.333333]   # 405nm
+  - [0.333333, 0.333333, 0.333333]   # 410nm
+  - [0.333333, 0.333333, 0.333333]   # 415nm
+  - [0.333333, 0.333333, 0.333333]   # 420nm
+  - [0.333333, 0.333333, 0.333333]   # 425nm
+  - [0.333333, 0.333333, 0.333333]   # 430nm
+  - [0.333333, 0.333333, 0.333333]   # 435nm
+  - [0.333333, 0.333333, 0.333333]   # 440nm
+  - [0.333333, 0.333333, 0.333333]   # 445nm
+  - [0.333333, 0.333333, 0.333333]   # 450nm
+  - [0.333333, 0.333333, 0.333333]   # 455nm
+  - [0.333333, 0.333333, 0.333333]   # 460nm
+  - [0.333333, 0.333333, 0.333333]   # 465nm
+  - [0.333333, 0.333333, 0.333333]   # 470nm
+  - [0.333333, 0.333333, 0.333333]   # 475nm
+  - [0.333333, 0.333333, 0.333333]   # 480nm
+  - [0.333333, 0.333333, 0.333333]   # 485nm
+  - [0.333333, 0.333333, 0.333333]   # 490nm
+  - [0.333333, 0.333333, 0.333333]   # 495nm
+  - [0.333333, 0.333333, 0.333333]   # 500nm
+  - [0.333333, 0.333333, 0.333333]   # 505nm
+  - [0.333333, 0.333333, 0.333333]   # 510nm
+  - [0.333333, 0.333333, 0.333333]   # 515nm
+  - [0.333333, 0.333333, 0.333333]   # 520nm
+  - [0.333333, 0.333333, 0.333333]   # 525nm
+  - [0.333333, 0.333333, 0.333333]   # 530nm
+  - [0.333333, 0.333333, 0.333333]   # 535nm
+  - [0.333333, 0.333333, 0.333333]   # 540nm
+  - [0.333333, 0.333333, 0.333333]   # 545nm
+  - [0.333333, 0.333333, 0.333333]   # 550nm
+  - [0.333333, 0.333333, 0.333333]   # 555nm
+  - [0.333333, 0.333333, 0.333333]   # 560nm
+  - [0.333333, 0.333333, 0.333333]   # 565nm
+  - [0.333333, 0.333333, 0.333333]   # 570nm
+  - [0.333333, 0.333333, 0.333333]   # 575nm
+  - [0.333333, 0.333333, 0.333333]   # 580nm
+  - [0.333333, 0.333333, 0.333333]   # 585nm
+  - [0.333333, 0.333333, 0.333333]   # 590nm
+  - [0.333333, 0.333333, 0.333333]   # 595nm
+  - [0.333333, 0.333333, 0.333333]   # 600nm
+  - [0.333333, 0.333333, 0.333333]   # 605nm
+  - [0.333333, 0.333333, 0.333333]   # 610nm
+  - [0.333333, 0.333333, 0.333333]   # 615nm
+  - [0.333333, 0.333333, 0.333333]   # 620nm
+  - [0.333333, 0.333333, 0.333333]   # 625nm
+  - [0.333333, 0.333333, 0.333333]   # 630nm
+  - [0.333333, 0.333333, 0.333333]   # 635nm
+  - [0.333333, 0.333333, 0.333333]   # 640nm
+  - [0.333333, 0.333333, 0.333333]   # 645nm
+  - [0.333333, 0.333333, 0.333333]   # 650nm
+  - [0.333333, 0.333333, 0.333333]   # 655nm
+  - [0.333333, 0.333333, 0.333333]   # 660nm
+  - [0.333333, 0.333333, 0.333333]   # 665nm
+  - [0.333333, 0.333333, 0.333333]   # 670nm
+  - [0.333333, 0.333333, 0.333333]   # 675nm
+  - [0.333333, 0.333333, 0.333333]   # 680nm
+  - [0.333333, 0.333333, 0.333333]   # 685nm
+  - [0.333333, 0.333333, 0.333333]   # 690nm
+  - [0.333333, 0.333333, 0.333333]   # 695nm
+  - [0.333333, 0.333333, 0.333333]   # 700nm
+  - [0.333333, 0.333333, 0.333333]   # 705nm
+  - [0.333333, 0.333333, 0.333333]   # 710nm
+  - [0.333333, 0.333333, 0.333333]   # 715nm
+  - [0.333333, 0.333333, 0.333333]   # 720nm
+  - [0.333333, 0.333333, 0.333333]   # 725nm
+  - [0.333333, 0.333333, 0.333333]   # 730nm
+  - [0.333333, 0.333333, 0.333333]   # 735nm
+  - [0.333333, 0.333333, 0.333333]   # 740nm
+  - [0.333333, 0.333333, 0.333333]   # 745nm
+  - [0.333333, 0.333333, 0.333333]   # 750nm
+  - [0.333333, 0.333333, 0.333333]   # 755nm
+  - [0.333333, 0.333333, 0.333333]   # 760nm
+  - [0.333333, 0.333333, 0.333333]   # 765nm
+  - [0.333333, 0.333333, 0.333333]   # 770nm
+  - [0.333333, 0.333333, 0.333333]   # 775nm
+  - [0.333333, 0.333333, 0.333333]   # 780nm
+
+# Base plus fog. No orange mask on a black-and-white film.
+base_density: [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
+
+# The characteristic curve, parametric.
+log_exposure_min: -3
+log_exposure_max: 4
+density_curves:
+  - [3.5129e-07, 3.5129e-07, 3.5129e-07]
+  - [4.2083e-07, 4.2083e-07, 4.2083e-07]
+  - [5.0412e-07, 5.0412e-07, 5.0412e-07]
+  - [6.039e-07, 6.039e-07, 6.039e-07]
+  - [7.2343e-07, 7.2343e-07, 7.2343e-07]
+  - [8.6662e-07, 8.6662e-07, 8.6662e-07]
+  - [1.0381e-06, 1.0381e-06, 1.0381e-06]
+  - [1.2436e-06, 1.2436e-06, 1.2436e-06]
+  - [1.4898e-06, 1.4898e-06, 1.4898e-06]
+  - [1.7846e-06, 1.7846e-06, 1.7846e-06]
+  - [2.1379e-06, 2.1379e-06, 2.1379e-06]
+  - [2.561e-06, 2.561e-06, 2.561e-06]
+  - [3.0679e-06, 3.0679e-06, 3.0679e-06]
+  - [3.6751e-06, 3.6751e-06, 3.6751e-06]
+  - [4.4025e-06, 4.4025e-06, 4.4025e-06]
+  - [5.2739e-06, 5.2739e-06, 5.2739e-06]
+  - [6.3177e-06, 6.3177e-06, 6.3177e-06]
+  - [7.5681e-06, 7.5681e-06, 7.5681e-06]
+  - [9.066e-06, 9.066e-06, 9.066e-06]
+  - [1.086e-05, 1.086e-05, 1.086e-05]
+  - [1.301e-05, 1.301e-05, 1.301e-05]
+  - [1.5585e-05, 1.5585e-05, 1.5585e-05]
+  - [1.8669e-05, 1.8669e-05, 1.8669e-05]
+  - [2.2364e-05, 2.2364e-05, 2.2364e-05]
+  - [2.6789e-05, 2.6789e-05, 2.6789e-05]
+  - [3.2091e-05, 3.2091e-05, 3.2091e-05]
+  - [3.8441e-05, 3.8441e-05, 3.8441e-05]
+  - [4.6048e-05, 4.6048e-05, 4.6048e-05]
+  - [5.516e-05, 5.516e-05, 5.516e-05]
+  - [6.6074e-05, 6.6074e-05, 6.6074e-05]
+  - [7.9146e-05, 7.9146e-05, 7.9146e-05]
+  - [9.4804e-05, 9.4804e-05, 9.4804e-05]
+  - [0.00011356, 0.00011356, 0.00011356]
+  - [0.00013602, 0.00013602, 0.00013602]
+  - [0.00016292, 0.00016292, 0.00016292]
+  - [0.00019513, 0.00019513, 0.00019513]
+  - [0.0002337, 0.0002337, 0.0002337]
+  - [0.00027989, 0.00027989, 0.00027989]
+  - [0.00033519, 0.00033519, 0.00033519]
+  - [0.00040139, 0.00040139, 0.00040139]
+  - [0.00048064, 0.00048064, 0.00048064]
+  - [0.00057548, 0.00057548, 0.00057548]
+  - [0.00068897, 0.00068897, 0.00068897]
+  - [0.00082475, 0.00082475, 0.00082475]
+  - [0.00098713, 0.00098713, 0.00098713]
+  - [0.0011813, 0.0011813, 0.0011813]
+  - [0.0014134, 0.0014134, 0.0014134]
+  - [0.0016906, 0.0016906, 0.0016906]
+  - [0.0020217, 0.0020217, 0.0020217]
+  - [0.0024167, 0.0024167, 0.0024167]
+  - [0.0028878, 0.0028878, 0.0028878]
+  - [0.0034491, 0.0034491, 0.0034491]
+  - [0.004117, 0.004117, 0.004117]
+  - [0.004911, 0.004911, 0.004911]
+  - [0.0058534, 0.0058534, 0.0058534]
+  - [0.0069701, 0.0069701, 0.0069701]
+  - [0.0082906, 0.0082906, 0.0082906]
+  - [0.0098485, 0.0098485, 0.0098485]
+  - [0.011681, 0.011681, 0.011681]
+  - [0.013831, 0.013831, 0.013831]
+  - [0.016344, 0.016344, 0.016344]
+  - [0.019268, 0.019268, 0.019268]
+  - [0.022655, 0.022655, 0.022655]
+  - [0.026559, 0.026559, 0.026559]
+  - [0.031032, 0.031032, 0.031032]
+  - [0.036126, 0.036126, 0.036126]
+  - [0.041886, 0.041886, 0.041886]
+  - [0.048352, 0.048352, 0.048352]
+  - [0.055556, 0.055556, 0.055556]
+  - [0.063518, 0.063518, 0.063518]
+  - [0.072247, 0.072247, 0.072247]
+  - [0.081739, 0.081739, 0.081739]
+  - [0.09198, 0.09198, 0.09198]
+  - [0.10294, 0.10294, 0.10294]
+  - [0.11459, 0.11459, 0.11459]
+  - [0.12687, 0.12687, 0.12687]
+  - [0.13975, 0.13975, 0.13975]
+  - [0.15317, 0.15317, 0.15317]
+  - [0.16707, 0.16707, 0.16707]
+  - [0.18141, 0.18141, 0.18141]
+  - [0.19613, 0.19613, 0.19613]
+  - [0.21119, 0.21119, 0.21119]
+  - [0.22653, 0.22653, 0.22653]
+  - [0.24214, 0.24214, 0.24214]
+  - [0.25796, 0.25796, 0.25796]
+  - [0.27396, 0.27396, 0.27396]
+  - [0.29013, 0.29013, 0.29013]
+  - [0.30643, 0.30643, 0.30643]
+  - [0.32284, 0.32284, 0.32284]
+  - [0.33935, 0.33935, 0.33935]
+  - [0.35595, 0.35595, 0.35595]
+  - [0.37261, 0.37261, 0.37261]
+  - [0.38933, 0.38933, 0.38933]
+  - [0.4061, 0.4061, 0.4061]
+  - [0.42291, 0.42291, 0.42291]
+  - [0.43975, 0.43975, 0.43975]
+  - [0.45663, 0.45663, 0.45663]
+  - [0.47352, 0.47352, 0.47352]
+  - [0.49044, 0.49044, 0.49044]
+  - [0.50737, 0.50737, 0.50737]
+  - [0.52432, 0.52432, 0.52432]
+  - [0.54128, 0.54128, 0.54128]
+  - [0.55825, 0.55825, 0.55825]
+  - [0.57523, 0.57523, 0.57523]
+  - [0.59222, 0.59222, 0.59222]
+  - [0.60921, 0.60921, 0.60921]
+  - [0.6262, 0.6262, 0.6262]
+  - [0.6432, 0.6432, 0.6432]
+  - [0.6602, 0.6602, 0.6602]
+  - [0.67721, 0.67721, 0.67721]
+  - [0.69422, 0.69422, 0.69422]
+  - [0.71123, 0.71123, 0.71123]
+  - [0.72824, 0.72824, 0.72824]
+  - [0.74525, 0.74525, 0.74525]
+  - [0.76226, 0.76226, 0.76226]
+  - [0.77928, 0.77928, 0.77928]
+  - [0.79629, 0.79629, 0.79629]
+  - [0.81331, 0.81331, 0.81331]
+  - [0.83033, 0.83033, 0.83033]
+  - [0.84734, 0.84734, 0.84734]
+  - [0.86436, 0.86436, 0.86436]
+  - [0.88138, 0.88138, 0.88138]
+  - [0.8984, 0.8984, 0.8984]
+  - [0.91542, 0.91542, 0.91542]
+  - [0.93244, 0.93244, 0.93244]
+  - [0.94945, 0.94945, 0.94945]
+  - [0.96647, 0.96647, 0.96647]
+  - [0.98349, 0.98349, 0.98349]
+  - [1.0005, 1.0005, 1.0005]
+  - [1.0175, 1.0175, 1.0175]
+  - [1.0345, 1.0345, 1.0345]
+  - [1.0516, 1.0516, 1.0516]
+  - [1.0686, 1.0686, 1.0686]
+  - [1.0856, 1.0856, 1.0856]
+  - [1.1026, 1.1026, 1.1026]
+  - [1.1196, 1.1196, 1.1196]
+  - [1.1367, 1.1367, 1.1367]
+  - [1.1537, 1.1537, 1.1537]
+  - [1.1707, 1.1707, 1.1707]
+  - [1.1877, 1.1877, 1.1877]
+  - [1.2047, 1.2047, 1.2047]
+  - [1.2218, 1.2218, 1.2218]
+  - [1.2388, 1.2388, 1.2388]
+  - [1.2558, 1.2558, 1.2558]
+  - [1.2728, 1.2728, 1.2728]
+  - [1.2898, 1.2898, 1.2898]
+  - [1.3068, 1.3068, 1.3068]
+  - [1.3239, 1.3239, 1.3239]
+  - [1.3409, 1.3409, 1.3409]
+  - [1.3579, 1.3579, 1.3579]
+  - [1.3749, 1.3749, 1.3749]
+  - [1.3919, 1.3919, 1.3919]
+  - [1.4089, 1.4089, 1.4089]
+  - [1.426, 1.426, 1.426]
+  - [1.443, 1.443, 1.443]
+  - [1.46, 1.46, 1.46]
+  - [1.477, 1.477, 1.477]
+  - [1.494, 1.494, 1.494]
+  - [1.511, 1.511, 1.511]
+  - [1.528, 1.528, 1.528]
+  - [1.545, 1.545, 1.545]
+  - [1.562, 1.562, 1.562]
+  - [1.579, 1.579, 1.579]
+  - [1.596, 1.596, 1.596]
+  - [1.613, 1.613, 1.613]
+  - [1.63, 1.63, 1.63]
+  - [1.647, 1.647, 1.647]
+  - [1.664, 1.664, 1.664]
+  - [1.681, 1.681, 1.681]
+  - [1.6979, 1.6979, 1.6979]
+  - [1.7149, 1.7149, 1.7149]
+  - [1.7319, 1.7319, 1.7319]
+  - [1.7488, 1.7488, 1.7488]
+  - [1.7657, 1.7657, 1.7657]
+  - [1.7827, 1.7827, 1.7827]
+  - [1.7996, 1.7996, 1.7996]
+  - [1.8165, 1.8165, 1.8165]
+  - [1.8333, 1.8333, 1.8333]
+  - [1.8502, 1.8502, 1.8502]
+  - [1.867, 1.867, 1.867]
+  - [1.8838, 1.8838, 1.8838]
+  - [1.9006, 1.9006, 1.9006]
+  - [1.9173, 1.9173, 1.9173]
+  - [1.934, 1.934, 1.934]
+  - [1.9506, 1.9506, 1.9506]
+  - [1.9672, 1.9672, 1.9672]
+  - [1.9837, 1.9837, 1.9837]
+  - [2.0001, 2.0001, 2.0001]
+  - [2.0165, 2.0165, 2.0165]
+  - [2.0327, 2.0327, 2.0327]
+  - [2.0489, 2.0489, 2.0489]
+  - [2.0649, 2.0649, 2.0649]
+  - [2.0807, 2.0807, 2.0807]
+  - [2.0965, 2.0965, 2.0965]
+  - [2.112, 2.112, 2.112]
+  - [2.1273, 2.1273, 2.1273]
+  - [2.1424, 2.1424, 2.1424]
+  - [2.1573, 2.1573, 2.1573]
+  - [2.1719, 2.1719, 2.1719]
+  - [2.1861, 2.1861, 2.1861]
+  - [2.2001, 2.2001, 2.2001]
+  - [2.2136, 2.2136, 2.2136]
+  - [2.2268, 2.2268, 2.2268]
+  - [2.2395, 2.2395, 2.2395]
+  - [2.2518, 2.2518, 2.2518]
+  - [2.2635, 2.2635, 2.2635]
+  - [2.2748, 2.2748, 2.2748]
+  - [2.2855, 2.2855, 2.2855]
+  - [2.2956, 2.2956, 2.2956]
+  - [2.3051, 2.3051, 2.3051]
+  - [2.3141, 2.3141, 2.3141]
+  - [2.3224, 2.3224, 2.3224]
+  - [2.3302, 2.3302, 2.3302]
+  - [2.3373, 2.3373, 2.3373]
+  - [2.3439, 2.3439, 2.3439]
+  - [2.3499, 2.3499, 2.3499]
+  - [2.3554, 2.3554, 2.3554]
+  - [2.3604, 2.3604, 2.3604]
+  - [2.3649, 2.3649, 2.3649]
+  - [2.369, 2.369, 2.369]
+  - [2.3726, 2.3726, 2.3726]
+  - [2.3759, 2.3759, 2.3759]
+  - [2.3788, 2.3788, 2.3788]
+  - [2.3814, 2.3814, 2.3814]
+  - [2.3836, 2.3836, 2.3836]
+  - [2.3857, 2.3857, 2.3857]
+  - [2.3875, 2.3875, 2.3875]
+  - [2.389, 2.389, 2.389]
+  - [2.3904, 2.3904, 2.3904]
+  - [2.3916, 2.3916, 2.3916]
+  - [2.3927, 2.3927, 2.3927]
+  - [2.3936, 2.3936, 2.3936]
+  - [2.3944, 2.3944, 2.3944]
+  - [2.3952, 2.3952, 2.3952]
+  - [2.3958, 2.3958, 2.3958]
+  - [2.3963, 2.3963, 2.3963]
+  - [2.3968, 2.3968, 2.3968]
+  - [2.3972, 2.3972, 2.3972]
+  - [2.3976, 2.3976, 2.3976]
+  - [2.3979, 2.3979, 2.3979]
+  - [2.3982, 2.3982, 2.3982]
+  - [2.3984, 2.3984, 2.3984]
+  - [2.3986, 2.3986, 2.3986]
+  - [2.3988, 2.3988, 2.3988]
+  - [2.3989, 2.3989, 2.3989]
+  - [2.3991, 2.3991, 2.3991]
+  - [2.3992, 2.3992, 2.3992]
+  - [2.3993, 2.3993, 2.3993]
+  - [2.3994, 2.3994, 2.3994]
+  - [2.3995, 2.3995, 2.3995]
+  - [2.3995, 2.3995, 2.3995]
+  - [2.3996, 2.3996, 2.3996]
+  - [2.3997, 2.3997, 2.3997]
+  - [2.3997, 2.3997, 2.3997]
+  - [2.3997, 2.3997, 2.3997]
+  - [2.3998, 2.3998, 2.3998]
diff --git a/core/dr-film/profiles/ilford_delta_400.yaml b/core/dr-film/profiles/ilford_delta_400.yaml
new file mode 100644
index 0000000..7694c53
--- /dev/null
+++ b/core/dr-film/profiles/ilford_delta_400.yaml
@@ -0,0 +1,459 @@
+# Generated by tools/film-profiles/convert.py.
+#
+# *** CONSTRUCTED, NOT MEASURED. ***
+#
+# Ilford publish this film's spectral sensitivity and characteristic
+# curve as graphs, and no granularity figure at all, so this profile is
+# built rather than extracted. Its speed is the published ISO rating,
+# and its contrast is ISO 6:1993's normal development (average gradient
+# 0.62). Its spectral response is borrowed from Kodak Double-X, a
+# *measured* panchromatic negative, shifted by the speed difference.
+# Its granularity is an estimate, ordered against the other films here.
+#
+# So it renders as a film of this speed and contrast, not as a
+# measurement of this emulsion. Replace it outright if anyone digitises
+# the real curves.
+
+version: 'constructed-1'
+stock: ilford_delta_400
+name: 'Ilford Delta 400'
+kind: negative          # negative | positive
+support: film    # film | paper
+stage: filming        # filming | printing
+monochrome: true
+reference_illuminant: D55
+viewing_illuminant: D50
+
+rms_granularity: [9, 9, 9]
+
+# log10 spectral sensitivity per layer, 380-780nm at 5nm.
+log_sensitivity:
+  - [-9, -9, -9]   # 380nm
+  - [-9, -9, -9]   # 385nm
+  - [-9, -9, -9]   # 390nm
+  - [-9, -9, -9]   # 395nm
+  - [-9, -9, -9]   # 400nm
+  - [-9, -9, -9]   # 405nm
+  - [-9, -9, -9]   # 410nm
+  - [-9, -9, -9]   # 415nm
+  - [-9, -9, -9]   # 420nm
+  - [-0.513098, -0.513098, -0.513098]   # 425nm
+  - [-0.51284, -0.51284, -0.51284]   # 430nm
+  - [-0.51284, -0.51284, -0.51284]   # 435nm
+  - [-0.51319, -0.51319, -0.51319]   # 440nm
+  - [-0.522893, -0.522893, -0.522893]   # 445nm
+  - [-0.53562, -0.53562, -0.53562]   # 450nm
+  - [-0.552412, -0.552412, -0.552412]   # 455nm
+  - [-0.571665, -0.571665, -0.571665]   # 460nm
+  - [-0.593122, -0.593122, -0.593122]   # 465nm
+  - [-0.611553, -0.611553, -0.611553]   # 470nm
+  - [-0.637438, -0.637438, -0.637438]   # 475nm
+  - [-0.665217, -0.665217, -0.665217]   # 480nm
+  - [-0.703161, -0.703161, -0.703161]   # 485nm
+  - [-0.742909, -0.742909, -0.742909]   # 490nm
+  - [-0.782594, -0.782594, -0.782594]   # 495nm
+  - [-0.815861, -0.815861, -0.815861]   # 500nm
+  - [-0.831143, -0.831143, -0.831143]   # 505nm
+  - [-0.834309, -0.834309, -0.834309]   # 510nm
+  - [-0.833599, -0.833599, -0.833599]   # 515nm
+  - [-0.823829, -0.823829, -0.823829]   # 520nm
+  - [-0.810809, -0.810809, -0.810809]   # 525nm
+  - [-0.796036, -0.796036, -0.796036]   # 530nm
+  - [-0.778081, -0.778081, -0.778081]   # 535nm
+  - [-0.759864, -0.759864, -0.759864]   # 540nm
+  - [-0.740987, -0.740987, -0.740987]   # 545nm
+  - [-0.724425, -0.724425, -0.724425]   # 550nm
+  - [-0.706653, -0.706653, -0.706653]   # 555nm
+  - [-0.693404, -0.693404, -0.693404]   # 560nm
+  - [-0.685993, -0.685993, -0.685993]   # 565nm
+  - [-0.68111, -0.68111, -0.68111]   # 570nm
+  - [-0.677547, -0.677547, -0.677547]   # 575nm
+  - [-0.680358, -0.680358, -0.680358]   # 580nm
+  - [-0.686794, -0.686794, -0.686794]   # 585nm
+  - [-0.696308, -0.696308, -0.696308]   # 590nm
+  - [-0.708955, -0.708955, -0.708955]   # 595nm
+  - [-0.720822, -0.720822, -0.720822]   # 600nm
+  - [-0.735995, -0.735995, -0.735995]   # 605nm
+  - [-0.751102, -0.751102, -0.751102]   # 610nm
+  - [-0.75613, -0.75613, -0.75613]   # 615nm
+  - [-0.747716, -0.747716, -0.747716]   # 620nm
+  - [-0.756689, -0.756689, -0.756689]   # 625nm
+  - [-0.785834, -0.785834, -0.785834]   # 630nm
+  - [-0.876194, -0.876194, -0.876194]   # 635nm
+  - [-1.06561, -1.06561, -1.06561]   # 640nm
+  - [-1.28125, -1.28125, -1.28125]   # 645nm
+  - [-1.53687, -1.53687, -1.53687]   # 650nm
+  - [-1.79873, -1.79873, -1.79873]   # 655nm
+  - [-2.0666, -2.0666, -2.0666]   # 660nm
+  - [-9, -9, -9]   # 665nm
+  - [-9, -9, -9]   # 670nm
+  - [-9, -9, -9]   # 675nm
+  - [-9, -9, -9]   # 680nm
+  - [-9, -9, -9]   # 685nm
+  - [-9, -9, -9]   # 690nm
+  - [-9, -9, -9]   # 695nm
+  - [-9, -9, -9]   # 700nm
+  - [-9, -9, -9]   # 705nm
+  - [-9, -9, -9]   # 710nm
+  - [-9, -9, -9]   # 715nm
+  - [-9, -9, -9]   # 720nm
+  - [-9, -9, -9]   # 725nm
+  - [-9, -9, -9]   # 730nm
+  - [-9, -9, -9]   # 735nm
+  - [-9, -9, -9]   # 740nm
+  - [-9, -9, -9]   # 745nm
+  - [-9, -9, -9]   # 750nm
+  - [-9, -9, -9]   # 755nm
+  - [-9, -9, -9]   # 760nm
+  - [-9, -9, -9]   # 765nm
+  - [-9, -9, -9]   # 770nm
+  - [-9, -9, -9]   # 775nm
+  - [-9, -9, -9]   # 780nm
+
+# Developed silver: neutral across the band.
+dye_density:
+  - [0.333333, 0.333333, 0.333333]   # 380nm
+  - [0.333333, 0.333333, 0.333333]   # 385nm
+  - [0.333333, 0.333333, 0.333333]   # 390nm
+  - [0.333333, 0.333333, 0.333333]   # 395nm
+  - [0.333333, 0.333333, 0.333333]   # 400nm
+  - [0.333333, 0.333333, 0.333333]   # 405nm
+  - [0.333333, 0.333333, 0.333333]   # 410nm
+  - [0.333333, 0.333333, 0.333333]   # 415nm
+  - [0.333333, 0.333333, 0.333333]   # 420nm
+  - [0.333333, 0.333333, 0.333333]   # 425nm
+  - [0.333333, 0.333333, 0.333333]   # 430nm
+  - [0.333333, 0.333333, 0.333333]   # 435nm
+  - [0.333333, 0.333333, 0.333333]   # 440nm
+  - [0.333333, 0.333333, 0.333333]   # 445nm
+  - [0.333333, 0.333333, 0.333333]   # 450nm
+  - [0.333333, 0.333333, 0.333333]   # 455nm
+  - [0.333333, 0.333333, 0.333333]   # 460nm
+  - [0.333333, 0.333333, 0.333333]   # 465nm
+  - [0.333333, 0.333333, 0.333333]   # 470nm
+  - [0.333333, 0.333333, 0.333333]   # 475nm
+  - [0.333333, 0.333333, 0.333333]   # 480nm
+  - [0.333333, 0.333333, 0.333333]   # 485nm
+  - [0.333333, 0.333333, 0.333333]   # 490nm
+  - [0.333333, 0.333333, 0.333333]   # 495nm
+  - [0.333333, 0.333333, 0.333333]   # 500nm
+  - [0.333333, 0.333333, 0.333333]   # 505nm
+  - [0.333333, 0.333333, 0.333333]   # 510nm
+  - [0.333333, 0.333333, 0.333333]   # 515nm
+  - [0.333333, 0.333333, 0.333333]   # 520nm
+  - [0.333333, 0.333333, 0.333333]   # 525nm
+  - [0.333333, 0.333333, 0.333333]   # 530nm
+  - [0.333333, 0.333333, 0.333333]   # 535nm
+  - [0.333333, 0.333333, 0.333333]   # 540nm
+  - [0.333333, 0.333333, 0.333333]   # 545nm
+  - [0.333333, 0.333333, 0.333333]   # 550nm
+  - [0.333333, 0.333333, 0.333333]   # 555nm
+  - [0.333333, 0.333333, 0.333333]   # 560nm
+  - [0.333333, 0.333333, 0.333333]   # 565nm
+  - [0.333333, 0.333333, 0.333333]   # 570nm
+  - [0.333333, 0.333333, 0.333333]   # 575nm
+  - [0.333333, 0.333333, 0.333333]   # 580nm
+  - [0.333333, 0.333333, 0.333333]   # 585nm
+  - [0.333333, 0.333333, 0.333333]   # 590nm
+  - [0.333333, 0.333333, 0.333333]   # 595nm
+  - [0.333333, 0.333333, 0.333333]   # 600nm
+  - [0.333333, 0.333333, 0.333333]   # 605nm
+  - [0.333333, 0.333333, 0.333333]   # 610nm
+  - [0.333333, 0.333333, 0.333333]   # 615nm
+  - [0.333333, 0.333333, 0.333333]   # 620nm
+  - [0.333333, 0.333333, 0.333333]   # 625nm
+  - [0.333333, 0.333333, 0.333333]   # 630nm
+  - [0.333333, 0.333333, 0.333333]   # 635nm
+  - [0.333333, 0.333333, 0.333333]   # 640nm
+  - [0.333333, 0.333333, 0.333333]   # 645nm
+  - [0.333333, 0.333333, 0.333333]   # 650nm
+  - [0.333333, 0.333333, 0.333333]   # 655nm
+  - [0.333333, 0.333333, 0.333333]   # 660nm
+  - [0.333333, 0.333333, 0.333333]   # 665nm
+  - [0.333333, 0.333333, 0.333333]   # 670nm
+  - [0.333333, 0.333333, 0.333333]   # 675nm
+  - [0.333333, 0.333333, 0.333333]   # 680nm
+  - [0.333333, 0.333333, 0.333333]   # 685nm
+  - [0.333333, 0.333333, 0.333333]   # 690nm
+  - [0.333333, 0.333333, 0.333333]   # 695nm
+  - [0.333333, 0.333333, 0.333333]   # 700nm
+  - [0.333333, 0.333333, 0.333333]   # 705nm
+  - [0.333333, 0.333333, 0.333333]   # 710nm
+  - [0.333333, 0.333333, 0.333333]   # 715nm
+  - [0.333333, 0.333333, 0.333333]   # 720nm
+  - [0.333333, 0.333333, 0.333333]   # 725nm
+  - [0.333333, 0.333333, 0.333333]   # 730nm
+  - [0.333333, 0.333333, 0.333333]   # 735nm
+  - [0.333333, 0.333333, 0.333333]   # 740nm
+  - [0.333333, 0.333333, 0.333333]   # 745nm
+  - [0.333333, 0.333333, 0.333333]   # 750nm
+  - [0.333333, 0.333333, 0.333333]   # 755nm
+  - [0.333333, 0.333333, 0.333333]   # 760nm
+  - [0.333333, 0.333333, 0.333333]   # 765nm
+  - [0.333333, 0.333333, 0.333333]   # 770nm
+  - [0.333333, 0.333333, 0.333333]   # 775nm
+  - [0.333333, 0.333333, 0.333333]   # 780nm
+
+# Base plus fog. No orange mask on a black-and-white film.
+base_density: [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
+
+# The characteristic curve, parametric.
+log_exposure_min: -3
+log_exposure_max: 4
+density_curves:
+  - [3.5129e-07, 3.5129e-07, 3.5129e-07]
+  - [4.2083e-07, 4.2083e-07, 4.2083e-07]
+  - [5.0412e-07, 5.0412e-07, 5.0412e-07]
+  - [6.039e-07, 6.039e-07, 6.039e-07]
+  - [7.2343e-07, 7.2343e-07, 7.2343e-07]
+  - [8.6662e-07, 8.6662e-07, 8.6662e-07]
+  - [1.0381e-06, 1.0381e-06, 1.0381e-06]
+  - [1.2436e-06, 1.2436e-06, 1.2436e-06]
+  - [1.4898e-06, 1.4898e-06, 1.4898e-06]
+  - [1.7846e-06, 1.7846e-06, 1.7846e-06]
+  - [2.1379e-06, 2.1379e-06, 2.1379e-06]
+  - [2.561e-06, 2.561e-06, 2.561e-06]
+  - [3.0679e-06, 3.0679e-06, 3.0679e-06]
+  - [3.6751e-06, 3.6751e-06, 3.6751e-06]
+  - [4.4025e-06, 4.4025e-06, 4.4025e-06]
+  - [5.2739e-06, 5.2739e-06, 5.2739e-06]
+  - [6.3177e-06, 6.3177e-06, 6.3177e-06]
+  - [7.5681e-06, 7.5681e-06, 7.5681e-06]
+  - [9.066e-06, 9.066e-06, 9.066e-06]
+  - [1.086e-05, 1.086e-05, 1.086e-05]
+  - [1.301e-05, 1.301e-05, 1.301e-05]
+  - [1.5585e-05, 1.5585e-05, 1.5585e-05]
+  - [1.8669e-05, 1.8669e-05, 1.8669e-05]
+  - [2.2364e-05, 2.2364e-05, 2.2364e-05]
+  - [2.6789e-05, 2.6789e-05, 2.6789e-05]
+  - [3.2091e-05, 3.2091e-05, 3.2091e-05]
+  - [3.8441e-05, 3.8441e-05, 3.8441e-05]
+  - [4.6048e-05, 4.6048e-05, 4.6048e-05]
+  - [5.516e-05, 5.516e-05, 5.516e-05]
+  - [6.6074e-05, 6.6074e-05, 6.6074e-05]
+  - [7.9146e-05, 7.9146e-05, 7.9146e-05]
+  - [9.4804e-05, 9.4804e-05, 9.4804e-05]
+  - [0.00011356, 0.00011356, 0.00011356]
+  - [0.00013602, 0.00013602, 0.00013602]
+  - [0.00016292, 0.00016292, 0.00016292]
+  - [0.00019513, 0.00019513, 0.00019513]
+  - [0.0002337, 0.0002337, 0.0002337]
+  - [0.00027989, 0.00027989, 0.00027989]
+  - [0.00033519, 0.00033519, 0.00033519]
+  - [0.00040139, 0.00040139, 0.00040139]
+  - [0.00048064, 0.00048064, 0.00048064]
+  - [0.00057548, 0.00057548, 0.00057548]
+  - [0.00068897, 0.00068897, 0.00068897]
+  - [0.00082475, 0.00082475, 0.00082475]
+  - [0.00098713, 0.00098713, 0.00098713]
+  - [0.0011813, 0.0011813, 0.0011813]
+  - [0.0014134, 0.0014134, 0.0014134]
+  - [0.0016906, 0.0016906, 0.0016906]
+  - [0.0020217, 0.0020217, 0.0020217]
+  - [0.0024167, 0.0024167, 0.0024167]
+  - [0.0028878, 0.0028878, 0.0028878]
+  - [0.0034491, 0.0034491, 0.0034491]
+  - [0.004117, 0.004117, 0.004117]
+  - [0.004911, 0.004911, 0.004911]
+  - [0.0058534, 0.0058534, 0.0058534]
+  - [0.0069701, 0.0069701, 0.0069701]
+  - [0.0082906, 0.0082906, 0.0082906]
+  - [0.0098485, 0.0098485, 0.0098485]
+  - [0.011681, 0.011681, 0.011681]
+  - [0.013831, 0.013831, 0.013831]
+  - [0.016344, 0.016344, 0.016344]
+  - [0.019268, 0.019268, 0.019268]
+  - [0.022655, 0.022655, 0.022655]
+  - [0.026559, 0.026559, 0.026559]
+  - [0.031032, 0.031032, 0.031032]
+  - [0.036126, 0.036126, 0.036126]
+  - [0.041886, 0.041886, 0.041886]
+  - [0.048352, 0.048352, 0.048352]
+  - [0.055556, 0.055556, 0.055556]
+  - [0.063518, 0.063518, 0.063518]
+  - [0.072247, 0.072247, 0.072247]
+  - [0.081739, 0.081739, 0.081739]
+  - [0.09198, 0.09198, 0.09198]
+  - [0.10294, 0.10294, 0.10294]
+  - [0.11459, 0.11459, 0.11459]
+  - [0.12687, 0.12687, 0.12687]
+  - [0.13975, 0.13975, 0.13975]
+  - [0.15317, 0.15317, 0.15317]
+  - [0.16707, 0.16707, 0.16707]
+  - [0.18141, 0.18141, 0.18141]
+  - [0.19613, 0.19613, 0.19613]
+  - [0.21119, 0.21119, 0.21119]
+  - [0.22653, 0.22653, 0.22653]
+  - [0.24214, 0.24214, 0.24214]
+  - [0.25796, 0.25796, 0.25796]
+  - [0.27396, 0.27396, 0.27396]
+  - [0.29013, 0.29013, 0.29013]
+  - [0.30643, 0.30643, 0.30643]
+  - [0.32284, 0.32284, 0.32284]
+  - [0.33935, 0.33935, 0.33935]
+  - [0.35595, 0.35595, 0.35595]
+  - [0.37261, 0.37261, 0.37261]
+  - [0.38933, 0.38933, 0.38933]
+  - [0.4061, 0.4061, 0.4061]
+  - [0.42291, 0.42291, 0.42291]
+  - [0.43975, 0.43975, 0.43975]
+  - [0.45663, 0.45663, 0.45663]
+  - [0.47352, 0.47352, 0.47352]
+  - [0.49044, 0.49044, 0.49044]
+  - [0.50737, 0.50737, 0.50737]
+  - [0.52432, 0.52432, 0.52432]
+  - [0.54128, 0.54128, 0.54128]
+  - [0.55825, 0.55825, 0.55825]
+  - [0.57523, 0.57523, 0.57523]
+  - [0.59222, 0.59222, 0.59222]
+  - [0.60921, 0.60921, 0.60921]
+  - [0.6262, 0.6262, 0.6262]
+  - [0.6432, 0.6432, 0.6432]
+  - [0.6602, 0.6602, 0.6602]
+  - [0.67721, 0.67721, 0.67721]
+  - [0.69422, 0.69422, 0.69422]
+  - [0.71123, 0.71123, 0.71123]
+  - [0.72824, 0.72824, 0.72824]
+  - [0.74525, 0.74525, 0.74525]
+  - [0.76226, 0.76226, 0.76226]
+  - [0.77928, 0.77928, 0.77928]
+  - [0.79629, 0.79629, 0.79629]
+  - [0.81331, 0.81331, 0.81331]
+  - [0.83033, 0.83033, 0.83033]
+  - [0.84734, 0.84734, 0.84734]
+  - [0.86436, 0.86436, 0.86436]
+  - [0.88138, 0.88138, 0.88138]
+  - [0.8984, 0.8984, 0.8984]
+  - [0.91542, 0.91542, 0.91542]
+  - [0.93244, 0.93244, 0.93244]
+  - [0.94945, 0.94945, 0.94945]
+  - [0.96647, 0.96647, 0.96647]
+  - [0.98349, 0.98349, 0.98349]
+  - [1.0005, 1.0005, 1.0005]
+  - [1.0175, 1.0175, 1.0175]
+  - [1.0345, 1.0345, 1.0345]
+  - [1.0516, 1.0516, 1.0516]
+  - [1.0686, 1.0686, 1.0686]
+  - [1.0856, 1.0856, 1.0856]
+  - [1.1026, 1.1026, 1.1026]
+  - [1.1196, 1.1196, 1.1196]
+  - [1.1367, 1.1367, 1.1367]
+  - [1.1537, 1.1537, 1.1537]
+  - [1.1707, 1.1707, 1.1707]
+  - [1.1877, 1.1877, 1.1877]
+  - [1.2047, 1.2047, 1.2047]
+  - [1.2218, 1.2218, 1.2218]
+  - [1.2388, 1.2388, 1.2388]
+  - [1.2558, 1.2558, 1.2558]
+  - [1.2728, 1.2728, 1.2728]
+  - [1.2898, 1.2898, 1.2898]
+  - [1.3068, 1.3068, 1.3068]
+  - [1.3239, 1.3239, 1.3239]
+  - [1.3409, 1.3409, 1.3409]
+  - [1.3579, 1.3579, 1.3579]
+  - [1.3749, 1.3749, 1.3749]
+  - [1.3919, 1.3919, 1.3919]
+  - [1.4089, 1.4089, 1.4089]
+  - [1.426, 1.426, 1.426]
+  - [1.443, 1.443, 1.443]
+  - [1.46, 1.46, 1.46]
+  - [1.477, 1.477, 1.477]
+  - [1.494, 1.494, 1.494]
+  - [1.511, 1.511, 1.511]
+  - [1.528, 1.528, 1.528]
+  - [1.545, 1.545, 1.545]
+  - [1.562, 1.562, 1.562]
+  - [1.579, 1.579, 1.579]
+  - [1.596, 1.596, 1.596]
+  - [1.613, 1.613, 1.613]
+  - [1.63, 1.63, 1.63]
+  - [1.647, 1.647, 1.647]
+  - [1.664, 1.664, 1.664]
+  - [1.681, 1.681, 1.681]
+  - [1.6979, 1.6979, 1.6979]
+  - [1.7149, 1.7149, 1.7149]
+  - [1.7319, 1.7319, 1.7319]
+  - [1.7488, 1.7488, 1.7488]
+  - [1.7657, 1.7657, 1.7657]
+  - [1.7827, 1.7827, 1.7827]
+  - [1.7996, 1.7996, 1.7996]
+  - [1.8165, 1.8165, 1.8165]
+  - [1.8333, 1.8333, 1.8333]
+  - [1.8502, 1.8502, 1.8502]
+  - [1.867, 1.867, 1.867]
+  - [1.8838, 1.8838, 1.8838]
+  - [1.9006, 1.9006, 1.9006]
+  - [1.9173, 1.9173, 1.9173]
+  - [1.934, 1.934, 1.934]
+  - [1.9506, 1.9506, 1.9506]
+  - [1.9672, 1.9672, 1.9672]
+  - [1.9837, 1.9837, 1.9837]
+  - [2.0001, 2.0001, 2.0001]
+  - [2.0165, 2.0165, 2.0165]
+  - [2.0327, 2.0327, 2.0327]
+  - [2.0489, 2.0489, 2.0489]
+  - [2.0649, 2.0649, 2.0649]
+  - [2.0807, 2.0807, 2.0807]
+  - [2.0965, 2.0965, 2.0965]
+  - [2.112, 2.112, 2.112]
+  - [2.1273, 2.1273, 2.1273]
+  - [2.1424, 2.1424, 2.1424]
+  - [2.1573, 2.1573, 2.1573]
+  - [2.1719, 2.1719, 2.1719]
+  - [2.1861, 2.1861, 2.1861]
+  - [2.2001, 2.2001, 2.2001]
+  - [2.2136, 2.2136, 2.2136]
+  - [2.2268, 2.2268, 2.2268]
+  - [2.2395, 2.2395, 2.2395]
+  - [2.2518, 2.2518, 2.2518]
+  - [2.2635, 2.2635, 2.2635]
+  - [2.2748, 2.2748, 2.2748]
+  - [2.2855, 2.2855, 2.2855]
+  - [2.2956, 2.2956, 2.2956]
+  - [2.3051, 2.3051, 2.3051]
+  - [2.3141, 2.3141, 2.3141]
+  - [2.3224, 2.3224, 2.3224]
+  - [2.3302, 2.3302, 2.3302]
+  - [2.3373, 2.3373, 2.3373]
+  - [2.3439, 2.3439, 2.3439]
+  - [2.3499, 2.3499, 2.3499]
+  - [2.3554, 2.3554, 2.3554]
+  - [2.3604, 2.3604, 2.3604]
+  - [2.3649, 2.3649, 2.3649]
+  - [2.369, 2.369, 2.369]
+  - [2.3726, 2.3726, 2.3726]
+  - [2.3759, 2.3759, 2.3759]
+  - [2.3788, 2.3788, 2.3788]
+  - [2.3814, 2.3814, 2.3814]
+  - [2.3836, 2.3836, 2.3836]
+  - [2.3857, 2.3857, 2.3857]
+  - [2.3875, 2.3875, 2.3875]
+  - [2.389, 2.389, 2.389]
+  - [2.3904, 2.3904, 2.3904]
+  - [2.3916, 2.3916, 2.3916]
+  - [2.3927, 2.3927, 2.3927]
+  - [2.3936, 2.3936, 2.3936]
+  - [2.3944, 2.3944, 2.3944]
+  - [2.3952, 2.3952, 2.3952]
+  - [2.3958, 2.3958, 2.3958]
+  - [2.3963, 2.3963, 2.3963]
+  - [2.3968, 2.3968, 2.3968]
+  - [2.3972, 2.3972, 2.3972]
+  - [2.3976, 2.3976, 2.3976]
+  - [2.3979, 2.3979, 2.3979]
+  - [2.3982, 2.3982, 2.3982]
+  - [2.3984, 2.3984, 2.3984]
+  - [2.3986, 2.3986, 2.3986]
+  - [2.3988, 2.3988, 2.3988]
+  - [2.3989, 2.3989, 2.3989]
+  - [2.3991, 2.3991, 2.3991]
+  - [2.3992, 2.3992, 2.3992]
+  - [2.3993, 2.3993, 2.3993]
+  - [2.3994, 2.3994, 2.3994]
+  - [2.3995, 2.3995, 2.3995]
+  - [2.3995, 2.3995, 2.3995]
+  - [2.3996, 2.3996, 2.3996]
+  - [2.3997, 2.3997, 2.3997]
+  - [2.3997, 2.3997, 2.3997]
+  - [2.3997, 2.3997, 2.3997]
+  - [2.3998, 2.3998, 2.3998]
diff --git a/core/dr-film/profiles/ilford_fp4_plus.yaml b/core/dr-film/profiles/ilford_fp4_plus.yaml
new file mode 100644
index 0000000..c118750
--- /dev/null
+++ b/core/dr-film/profiles/ilford_fp4_plus.yaml
@@ -0,0 +1,459 @@
+# Generated by tools/film-profiles/convert.py.
+#
+# *** CONSTRUCTED, NOT MEASURED. ***
+#
+# Ilford publish this film's spectral sensitivity and characteristic
+# curve as graphs, and no granularity figure at all, so this profile is
+# built rather than extracted. Its speed is the published ISO rating,
+# and its contrast is ISO 6:1993's normal development (average gradient
+# 0.62). Its spectral response is borrowed from Kodak Double-X, a
+# *measured* panchromatic negative, shifted by the speed difference.
+# Its granularity is an estimate, ordered against the other films here.
+#
+# So it renders as a film of this speed and contrast, not as a
+# measurement of this emulsion. Replace it outright if anyone digitises
+# the real curves.
+
+version: 'constructed-1'
+stock: ilford_fp4_plus
+name: 'Ilford FP4 Plus'
+kind: negative          # negative | positive
+support: film    # film | paper
+stage: filming        # filming | printing
+monochrome: true
+reference_illuminant: D55
+viewing_illuminant: D50
+
+rms_granularity: [7, 7, 7]
+
+# log10 spectral sensitivity per layer, 380-780nm at 5nm.
+log_sensitivity:
+  - [-9, -9, -9]   # 380nm
+  - [-9, -9, -9]   # 385nm
+  - [-9, -9, -9]   # 390nm
+  - [-9, -9, -9]   # 395nm
+  - [-9, -9, -9]   # 400nm
+  - [-9, -9, -9]   # 405nm
+  - [-9, -9, -9]   # 410nm
+  - [-9, -9, -9]   # 415nm
+  - [-9, -9, -9]   # 420nm
+  - [-1.01825, -1.01825, -1.01825]   # 425nm
+  - [-1.01799, -1.01799, -1.01799]   # 430nm
+  - [-1.01799, -1.01799, -1.01799]   # 435nm
+  - [-1.01834, -1.01834, -1.01834]   # 440nm
+  - [-1.02804, -1.02804, -1.02804]   # 445nm
+  - [-1.04077, -1.04077, -1.04077]   # 450nm
+  - [-1.05756, -1.05756, -1.05756]   # 455nm
+  - [-1.07682, -1.07682, -1.07682]   # 460nm
+  - [-1.09827, -1.09827, -1.09827]   # 465nm
+  - [-1.1167, -1.1167, -1.1167]   # 470nm
+  - [-1.14259, -1.14259, -1.14259]   # 475nm
+  - [-1.17037, -1.17037, -1.17037]   # 480nm
+  - [-1.20831, -1.20831, -1.20831]   # 485nm
+  - [-1.24806, -1.24806, -1.24806]   # 490nm
+  - [-1.28774, -1.28774, -1.28774]   # 495nm
+  - [-1.32101, -1.32101, -1.32101]   # 500nm
+  - [-1.33629, -1.33629, -1.33629]   # 505nm
+  - [-1.33946, -1.33946, -1.33946]   # 510nm
+  - [-1.33875, -1.33875, -1.33875]   # 515nm
+  - [-1.32898, -1.32898, -1.32898]   # 520nm
+  - [-1.31596, -1.31596, -1.31596]   # 525nm
+  - [-1.30119, -1.30119, -1.30119]   # 530nm
+  - [-1.28323, -1.28323, -1.28323]   # 535nm
+  - [-1.26501, -1.26501, -1.26501]   # 540nm
+  - [-1.24614, -1.24614, -1.24614]   # 545nm
+  - [-1.22957, -1.22957, -1.22957]   # 550nm
+  - [-1.2118, -1.2118, -1.2118]   # 555nm
+  - [-1.19855, -1.19855, -1.19855]   # 560nm
+  - [-1.19114, -1.19114, -1.19114]   # 565nm
+  - [-1.18626, -1.18626, -1.18626]   # 570nm
+  - [-1.1827, -1.1827, -1.1827]   # 575nm
+  - [-1.18551, -1.18551, -1.18551]   # 580nm
+  - [-1.19194, -1.19194, -1.19194]   # 585nm
+  - [-1.20146, -1.20146, -1.20146]   # 590nm
+  - [-1.2141, -1.2141, -1.2141]   # 595nm
+  - [-1.22597, -1.22597, -1.22597]   # 600nm
+  - [-1.24114, -1.24114, -1.24114]   # 605nm
+  - [-1.25625, -1.25625, -1.25625]   # 610nm
+  - [-1.26128, -1.26128, -1.26128]   # 615nm
+  - [-1.25287, -1.25287, -1.25287]   # 620nm
+  - [-1.26184, -1.26184, -1.26184]   # 625nm
+  - [-1.29098, -1.29098, -1.29098]   # 630nm
+  - [-1.38134, -1.38134, -1.38134]   # 635nm
+  - [-1.57076, -1.57076, -1.57076]   # 640nm
+  - [-1.7864, -1.7864, -1.7864]   # 645nm
+  - [-2.04202, -2.04202, -2.04202]   # 650nm
+  - [-2.30388, -2.30388, -2.30388]   # 655nm
+  - [-2.57175, -2.57175, -2.57175]   # 660nm
+  - [-9, -9, -9]   # 665nm
+  - [-9, -9, -9]   # 670nm
+  - [-9, -9, -9]   # 675nm
+  - [-9, -9, -9]   # 680nm
+  - [-9, -9, -9]   # 685nm
+  - [-9, -9, -9]   # 690nm
+  - [-9, -9, -9]   # 695nm
+  - [-9, -9, -9]   # 700nm
+  - [-9, -9, -9]   # 705nm
+  - [-9, -9, -9]   # 710nm
+  - [-9, -9, -9]   # 715nm
+  - [-9, -9, -9]   # 720nm
+  - [-9, -9, -9]   # 725nm
+  - [-9, -9, -9]   # 730nm
+  - [-9, -9, -9]   # 735nm
+  - [-9, -9, -9]   # 740nm
+  - [-9, -9, -9]   # 745nm
+  - [-9, -9, -9]   # 750nm
+  - [-9, -9, -9]   # 755nm
+  - [-9, -9, -9]   # 760nm
+  - [-9, -9, -9]   # 765nm
+  - [-9, -9, -9]   # 770nm
+  - [-9, -9, -9]   # 775nm
+  - [-9, -9, -9]   # 780nm
+
+# Developed silver: neutral across the band.
+dye_density:
+  - [0.333333, 0.333333, 0.333333]   # 380nm
+  - [0.333333, 0.333333, 0.333333]   # 385nm
+  - [0.333333, 0.333333, 0.333333]   # 390nm
+  - [0.333333, 0.333333, 0.333333]   # 395nm
+  - [0.333333, 0.333333, 0.333333]   # 400nm
+  - [0.333333, 0.333333, 0.333333]   # 405nm
+  - [0.333333, 0.333333, 0.333333]   # 410nm
+  - [0.333333, 0.333333, 0.333333]   # 415nm
+  - [0.333333, 0.333333, 0.333333]   # 420nm
+  - [0.333333, 0.333333, 0.333333]   # 425nm
+  - [0.333333, 0.333333, 0.333333]   # 430nm
+  - [0.333333, 0.333333, 0.333333]   # 435nm
+  - [0.333333, 0.333333, 0.333333]   # 440nm
+  - [0.333333, 0.333333, 0.333333]   # 445nm
+  - [0.333333, 0.333333, 0.333333]   # 450nm
+  - [0.333333, 0.333333, 0.333333]   # 455nm
+  - [0.333333, 0.333333, 0.333333]   # 460nm
+  - [0.333333, 0.333333, 0.333333]   # 465nm
+  - [0.333333, 0.333333, 0.333333]   # 470nm
+  - [0.333333, 0.333333, 0.333333]   # 475nm
+  - [0.333333, 0.333333, 0.333333]   # 480nm
+  - [0.333333, 0.333333, 0.333333]   # 485nm
+  - [0.333333, 0.333333, 0.333333]   # 490nm
+  - [0.333333, 0.333333, 0.333333]   # 495nm
+  - [0.333333, 0.333333, 0.333333]   # 500nm
+  - [0.333333, 0.333333, 0.333333]   # 505nm
+  - [0.333333, 0.333333, 0.333333]   # 510nm
+  - [0.333333, 0.333333, 0.333333]   # 515nm
+  - [0.333333, 0.333333, 0.333333]   # 520nm
+  - [0.333333, 0.333333, 0.333333]   # 525nm
+  - [0.333333, 0.333333, 0.333333]   # 530nm
+  - [0.333333, 0.333333, 0.333333]   # 535nm
+  - [0.333333, 0.333333, 0.333333]   # 540nm
+  - [0.333333, 0.333333, 0.333333]   # 545nm
+  - [0.333333, 0.333333, 0.333333]   # 550nm
+  - [0.333333, 0.333333, 0.333333]   # 555nm
+  - [0.333333, 0.333333, 0.333333]   # 560nm
+  - [0.333333, 0.333333, 0.333333]   # 565nm
+  - [0.333333, 0.333333, 0.333333]   # 570nm
+  - [0.333333, 0.333333, 0.333333]   # 575nm
+  - [0.333333, 0.333333, 0.333333]   # 580nm
+  - [0.333333, 0.333333, 0.333333]   # 585nm
+  - [0.333333, 0.333333, 0.333333]   # 590nm
+  - [0.333333, 0.333333, 0.333333]   # 595nm
+  - [0.333333, 0.333333, 0.333333]   # 600nm
+  - [0.333333, 0.333333, 0.333333]   # 605nm
+  - [0.333333, 0.333333, 0.333333]   # 610nm
+  - [0.333333, 0.333333, 0.333333]   # 615nm
+  - [0.333333, 0.333333, 0.333333]   # 620nm
+  - [0.333333, 0.333333, 0.333333]   # 625nm
+  - [0.333333, 0.333333, 0.333333]   # 630nm
+  - [0.333333, 0.333333, 0.333333]   # 635nm
+  - [0.333333, 0.333333, 0.333333]   # 640nm
+  - [0.333333, 0.333333, 0.333333]   # 645nm
+  - [0.333333, 0.333333, 0.333333]   # 650nm
+  - [0.333333, 0.333333, 0.333333]   # 655nm
+  - [0.333333, 0.333333, 0.333333]   # 660nm
+  - [0.333333, 0.333333, 0.333333]   # 665nm
+  - [0.333333, 0.333333, 0.333333]   # 670nm
+  - [0.333333, 0.333333, 0.333333]   # 675nm
+  - [0.333333, 0.333333, 0.333333]   # 680nm
+  - [0.333333, 0.333333, 0.333333]   # 685nm
+  - [0.333333, 0.333333, 0.333333]   # 690nm
+  - [0.333333, 0.333333, 0.333333]   # 695nm
+  - [0.333333, 0.333333, 0.333333]   # 700nm
+  - [0.333333, 0.333333, 0.333333]   # 705nm
+  - [0.333333, 0.333333, 0.333333]   # 710nm
+  - [0.333333, 0.333333, 0.333333]   # 715nm
+  - [0.333333, 0.333333, 0.333333]   # 720nm
+  - [0.333333, 0.333333, 0.333333]   # 725nm
+  - [0.333333, 0.333333, 0.333333]   # 730nm
+  - [0.333333, 0.333333, 0.333333]   # 735nm
+  - [0.333333, 0.333333, 0.333333]   # 740nm
+  - [0.333333, 0.333333, 0.333333]   # 745nm
+  - [0.333333, 0.333333, 0.333333]   # 750nm
+  - [0.333333, 0.333333, 0.333333]   # 755nm
+  - [0.333333, 0.333333, 0.333333]   # 760nm
+  - [0.333333, 0.333333, 0.333333]   # 765nm
+  - [0.333333, 0.333333, 0.333333]   # 770nm
+  - [0.333333, 0.333333, 0.333333]   # 775nm
+  - [0.333333, 0.333333, 0.333333]   # 780nm
+
+# Base plus fog. No orange mask on a black-and-white film.
+base_density: [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
+
+# The characteristic curve, parametric.
+log_exposure_min: -3
+log_exposure_max: 4
+density_curves:
+  - [3.5129e-07, 3.5129e-07, 3.5129e-07]
+  - [4.2083e-07, 4.2083e-07, 4.2083e-07]
+  - [5.0412e-07, 5.0412e-07, 5.0412e-07]
+  - [6.039e-07, 6.039e-07, 6.039e-07]
+  - [7.2343e-07, 7.2343e-07, 7.2343e-07]
+  - [8.6662e-07, 8.6662e-07, 8.6662e-07]
+  - [1.0381e-06, 1.0381e-06, 1.0381e-06]
+  - [1.2436e-06, 1.2436e-06, 1.2436e-06]
+  - [1.4898e-06, 1.4898e-06, 1.4898e-06]
+  - [1.7846e-06, 1.7846e-06, 1.7846e-06]
+  - [2.1379e-06, 2.1379e-06, 2.1379e-06]
+  - [2.561e-06, 2.561e-06, 2.561e-06]
+  - [3.0679e-06, 3.0679e-06, 3.0679e-06]
+  - [3.6751e-06, 3.6751e-06, 3.6751e-06]
+  - [4.4025e-06, 4.4025e-06, 4.4025e-06]
+  - [5.2739e-06, 5.2739e-06, 5.2739e-06]
+  - [6.3177e-06, 6.3177e-06, 6.3177e-06]
+  - [7.5681e-06, 7.5681e-06, 7.5681e-06]
+  - [9.066e-06, 9.066e-06, 9.066e-06]
+  - [1.086e-05, 1.086e-05, 1.086e-05]
+  - [1.301e-05, 1.301e-05, 1.301e-05]
+  - [1.5585e-05, 1.5585e-05, 1.5585e-05]
+  - [1.8669e-05, 1.8669e-05, 1.8669e-05]
+  - [2.2364e-05, 2.2364e-05, 2.2364e-05]
+  - [2.6789e-05, 2.6789e-05, 2.6789e-05]
+  - [3.2091e-05, 3.2091e-05, 3.2091e-05]
+  - [3.8441e-05, 3.8441e-05, 3.8441e-05]
+  - [4.6048e-05, 4.6048e-05, 4.6048e-05]
+  - [5.516e-05, 5.516e-05, 5.516e-05]
+  - [6.6074e-05, 6.6074e-05, 6.6074e-05]
+  - [7.9146e-05, 7.9146e-05, 7.9146e-05]
+  - [9.4804e-05, 9.4804e-05, 9.4804e-05]
+  - [0.00011356, 0.00011356, 0.00011356]
+  - [0.00013602, 0.00013602, 0.00013602]
+  - [0.00016292, 0.00016292, 0.00016292]
+  - [0.00019513, 0.00019513, 0.00019513]
+  - [0.0002337, 0.0002337, 0.0002337]
+  - [0.00027989, 0.00027989, 0.00027989]
+  - [0.00033519, 0.00033519, 0.00033519]
+  - [0.00040139, 0.00040139, 0.00040139]
+  - [0.00048064, 0.00048064, 0.00048064]
+  - [0.00057548, 0.00057548, 0.00057548]
+  - [0.00068897, 0.00068897, 0.00068897]
+  - [0.00082475, 0.00082475, 0.00082475]
+  - [0.00098713, 0.00098713, 0.00098713]
+  - [0.0011813, 0.0011813, 0.0011813]
+  - [0.0014134, 0.0014134, 0.0014134]
+  - [0.0016906, 0.0016906, 0.0016906]
+  - [0.0020217, 0.0020217, 0.0020217]
+  - [0.0024167, 0.0024167, 0.0024167]
+  - [0.0028878, 0.0028878, 0.0028878]
+  - [0.0034491, 0.0034491, 0.0034491]
+  - [0.004117, 0.004117, 0.004117]
+  - [0.004911, 0.004911, 0.004911]
+  - [0.0058534, 0.0058534, 0.0058534]
+  - [0.0069701, 0.0069701, 0.0069701]
+  - [0.0082906, 0.0082906, 0.0082906]
+  - [0.0098485, 0.0098485, 0.0098485]
+  - [0.011681, 0.011681, 0.011681]
+  - [0.013831, 0.013831, 0.013831]
+  - [0.016344, 0.016344, 0.016344]
+  - [0.019268, 0.019268, 0.019268]
+  - [0.022655, 0.022655, 0.022655]
+  - [0.026559, 0.026559, 0.026559]
+  - [0.031032, 0.031032, 0.031032]
+  - [0.036126, 0.036126, 0.036126]
+  - [0.041886, 0.041886, 0.041886]
+  - [0.048352, 0.048352, 0.048352]
+  - [0.055556, 0.055556, 0.055556]
+  - [0.063518, 0.063518, 0.063518]
+  - [0.072247, 0.072247, 0.072247]
+  - [0.081739, 0.081739, 0.081739]
+  - [0.09198, 0.09198, 0.09198]
+  - [0.10294, 0.10294, 0.10294]
+  - [0.11459, 0.11459, 0.11459]
+  - [0.12687, 0.12687, 0.12687]
+  - [0.13975, 0.13975, 0.13975]
+  - [0.15317, 0.15317, 0.15317]
+  - [0.16707, 0.16707, 0.16707]
+  - [0.18141, 0.18141, 0.18141]
+  - [0.19613, 0.19613, 0.19613]
+  - [0.21119, 0.21119, 0.21119]
+  - [0.22653, 0.22653, 0.22653]
+  - [0.24214, 0.24214, 0.24214]
+  - [0.25796, 0.25796, 0.25796]
+  - [0.27396, 0.27396, 0.27396]
+  - [0.29013, 0.29013, 0.29013]
+  - [0.30643, 0.30643, 0.30643]
+  - [0.32284, 0.32284, 0.32284]
+  - [0.33935, 0.33935, 0.33935]
+  - [0.35595, 0.35595, 0.35595]
+  - [0.37261, 0.37261, 0.37261]
+  - [0.38933, 0.38933, 0.38933]
+  - [0.4061, 0.4061, 0.4061]
+  - [0.42291, 0.42291, 0.42291]
+  - [0.43975, 0.43975, 0.43975]
+  - [0.45663, 0.45663, 0.45663]
+  - [0.47352, 0.47352, 0.47352]
+  - [0.49044, 0.49044, 0.49044]
+  - [0.50737, 0.50737, 0.50737]
+  - [0.52432, 0.52432, 0.52432]
+  - [0.54128, 0.54128, 0.54128]
+  - [0.55825, 0.55825, 0.55825]
+  - [0.57523, 0.57523, 0.57523]
+  - [0.59222, 0.59222, 0.59222]
+  - [0.60921, 0.60921, 0.60921]
+  - [0.6262, 0.6262, 0.6262]
+  - [0.6432, 0.6432, 0.6432]
+  - [0.6602, 0.6602, 0.6602]
+  - [0.67721, 0.67721, 0.67721]
+  - [0.69422, 0.69422, 0.69422]
+  - [0.71123, 0.71123, 0.71123]
+  - [0.72824, 0.72824, 0.72824]
+  - [0.74525, 0.74525, 0.74525]
+  - [0.76226, 0.76226, 0.76226]
+  - [0.77928, 0.77928, 0.77928]
+  - [0.79629, 0.79629, 0.79629]
+  - [0.81331, 0.81331, 0.81331]
+  - [0.83033, 0.83033, 0.83033]
+  - [0.84734, 0.84734, 0.84734]
+  - [0.86436, 0.86436, 0.86436]
+  - [0.88138, 0.88138, 0.88138]
+  - [0.8984, 0.8984, 0.8984]
+  - [0.91542, 0.91542, 0.91542]
+  - [0.93244, 0.93244, 0.93244]
+  - [0.94945, 0.94945, 0.94945]
+  - [0.96647, 0.96647, 0.96647]
+  - [0.98349, 0.98349, 0.98349]
+  - [1.0005, 1.0005, 1.0005]
+  - [1.0175, 1.0175, 1.0175]
+  - [1.0345, 1.0345, 1.0345]
+  - [1.0516, 1.0516, 1.0516]
+  - [1.0686, 1.0686, 1.0686]
+  - [1.0856, 1.0856, 1.0856]
+  - [1.1026, 1.1026, 1.1026]
+  - [1.1196, 1.1196, 1.1196]
+  - [1.1367, 1.1367, 1.1367]
+  - [1.1537, 1.1537, 1.1537]
+  - [1.1707, 1.1707, 1.1707]
+  - [1.1877, 1.1877, 1.1877]
+  - [1.2047, 1.2047, 1.2047]
+  - [1.2218, 1.2218, 1.2218]
+  - [1.2388, 1.2388, 1.2388]
+  - [1.2558, 1.2558, 1.2558]
+  - [1.2728, 1.2728, 1.2728]
+  - [1.2898, 1.2898, 1.2898]
+  - [1.3069, 1.3069, 1.3069]
+  - [1.3239, 1.3239, 1.3239]
+  - [1.3409, 1.3409, 1.3409]
+  - [1.3579, 1.3579, 1.3579]
+  - [1.3749, 1.3749, 1.3749]
+  - [1.3919, 1.3919, 1.3919]
+  - [1.409, 1.409, 1.409]
+  - [1.426, 1.426, 1.426]
+  - [1.443, 1.443, 1.443]
+  - [1.46, 1.46, 1.46]
+  - [1.477, 1.477, 1.477]
+  - [1.494, 1.494, 1.494]
+  - [1.5111, 1.5111, 1.5111]
+  - [1.5281, 1.5281, 1.5281]
+  - [1.5451, 1.5451, 1.5451]
+  - [1.5621, 1.5621, 1.5621]
+  - [1.5791, 1.5791, 1.5791]
+  - [1.5961, 1.5961, 1.5961]
+  - [1.6131, 1.6131, 1.6131]
+  - [1.6301, 1.6301, 1.6301]
+  - [1.6471, 1.6471, 1.6471]
+  - [1.6642, 1.6642, 1.6642]
+  - [1.6812, 1.6812, 1.6812]
+  - [1.6982, 1.6982, 1.6982]
+  - [1.7151, 1.7151, 1.7151]
+  - [1.7321, 1.7321, 1.7321]
+  - [1.7491, 1.7491, 1.7491]
+  - [1.7661, 1.7661, 1.7661]
+  - [1.7831, 1.7831, 1.7831]
+  - [1.8001, 1.8001, 1.8001]
+  - [1.817, 1.817, 1.817]
+  - [1.834, 1.834, 1.834]
+  - [1.8509, 1.8509, 1.8509]
+  - [1.8679, 1.8679, 1.8679]
+  - [1.8848, 1.8848, 1.8848]
+  - [1.9017, 1.9017, 1.9017]
+  - [1.9186, 1.9186, 1.9186]
+  - [1.9354, 1.9354, 1.9354]
+  - [1.9523, 1.9523, 1.9523]
+  - [1.9691, 1.9691, 1.9691]
+  - [1.9859, 1.9859, 1.9859]
+  - [2.0027, 2.0027, 2.0027]
+  - [2.0194, 2.0194, 2.0194]
+  - [2.036, 2.036, 2.036]
+  - [2.0527, 2.0527, 2.0527]
+  - [2.0692, 2.0692, 2.0692]
+  - [2.0857, 2.0857, 2.0857]
+  - [2.1022, 2.1022, 2.1022]
+  - [2.1185, 2.1185, 2.1185]
+  - [2.1347, 2.1347, 2.1347]
+  - [2.1509, 2.1509, 2.1509]
+  - [2.1669, 2.1669, 2.1669]
+  - [2.1827, 2.1827, 2.1827]
+  - [2.1984, 2.1984, 2.1984]
+  - [2.2139, 2.2139, 2.2139]
+  - [2.2292, 2.2292, 2.2292]
+  - [2.2443, 2.2443, 2.2443]
+  - [2.2591, 2.2591, 2.2591]
+  - [2.2737, 2.2737, 2.2737]
+  - [2.2879, 2.2879, 2.2879]
+  - [2.3018, 2.3018, 2.3018]
+  - [2.3153, 2.3153, 2.3153]
+  - [2.3284, 2.3284, 2.3284]
+  - [2.3411, 2.3411, 2.3411]
+  - [2.3533, 2.3533, 2.3533]
+  - [2.365, 2.365, 2.365]
+  - [2.3761, 2.3761, 2.3761]
+  - [2.3867, 2.3867, 2.3867]
+  - [2.3968, 2.3968, 2.3968]
+  - [2.4063, 2.4063, 2.4063]
+  - [2.4151, 2.4151, 2.4151]
+  - [2.4234, 2.4234, 2.4234]
+  - [2.4311, 2.4311, 2.4311]
+  - [2.4382, 2.4382, 2.4382]
+  - [2.4447, 2.4447, 2.4447]
+  - [2.4507, 2.4507, 2.4507]
+  - [2.4561, 2.4561, 2.4561]
+  - [2.461, 2.461, 2.461]
+  - [2.4655, 2.4655, 2.4655]
+  - [2.4695, 2.4695, 2.4695]
+  - [2.4731, 2.4731, 2.4731]
+  - [2.4763, 2.4763, 2.4763]
+  - [2.4791, 2.4791, 2.4791]
+  - [2.4817, 2.4817, 2.4817]
+  - [2.4839, 2.4839, 2.4839]
+  - [2.4859, 2.4859, 2.4859]
+  - [2.4877, 2.4877, 2.4877]
+  - [2.4892, 2.4892, 2.4892]
+  - [2.4906, 2.4906, 2.4906]
+  - [2.4918, 2.4918, 2.4918]
+  - [2.4928, 2.4928, 2.4928]
+  - [2.4937, 2.4937, 2.4937]
+  - [2.4945, 2.4945, 2.4945]
+  - [2.4952, 2.4952, 2.4952]
+  - [2.4958, 2.4958, 2.4958]
+  - [2.4964, 2.4964, 2.4964]
+  - [2.4969, 2.4969, 2.4969]
+  - [2.4973, 2.4973, 2.4973]
+  - [2.4976, 2.4976, 2.4976]
+  - [2.4979, 2.4979, 2.4979]
+  - [2.4982, 2.4982, 2.4982]
+  - [2.4984, 2.4984, 2.4984]
+  - [2.4986, 2.4986, 2.4986]
+  - [2.4988, 2.4988, 2.4988]
+  - [2.499, 2.499, 2.499]
+  - [2.4991, 2.4991, 2.4991]
+  - [2.4992, 2.4992, 2.4992]
+  - [2.4993, 2.4993, 2.4993]
+  - [2.4994, 2.4994, 2.4994]
+  - [2.4995, 2.4995, 2.4995]
diff --git a/core/dr-film/profiles/ilford_hp5_plus.yaml b/core/dr-film/profiles/ilford_hp5_plus.yaml
new file mode 100644
index 0000000..7ba23c5
--- /dev/null
+++ b/core/dr-film/profiles/ilford_hp5_plus.yaml
@@ -0,0 +1,459 @@
+# Generated by tools/film-profiles/convert.py.
+#
+# *** CONSTRUCTED, NOT MEASURED. ***
+#
+# Ilford publish this film's spectral sensitivity and characteristic
+# curve as graphs, and no granularity figure at all, so this profile is
+# built rather than extracted. Its speed is the published ISO rating,
+# and its contrast is ISO 6:1993's normal development (average gradient
+# 0.62). Its spectral response is borrowed from Kodak Double-X, a
+# *measured* panchromatic negative, shifted by the speed difference.
+# Its granularity is an estimate, ordered against the other films here.
+#
+# So it renders as a film of this speed and contrast, not as a
+# measurement of this emulsion. Replace it outright if anyone digitises
+# the real curves.
+
+version: 'constructed-1'
+stock: ilford_hp5_plus
+name: 'Ilford HP5 Plus'
+kind: negative          # negative | positive
+support: film    # film | paper
+stage: filming        # filming | printing
+monochrome: true
+reference_illuminant: D55
+viewing_illuminant: D50
+
+rms_granularity: [11, 11, 11]
+
+# log10 spectral sensitivity per layer, 380-780nm at 5nm.
+log_sensitivity:
+  - [-9, -9, -9]   # 380nm
+  - [-9, -9, -9]   # 385nm
+  - [-9, -9, -9]   # 390nm
+  - [-9, -9, -9]   # 395nm
+  - [-9, -9, -9]   # 400nm
+  - [-9, -9, -9]   # 405nm
+  - [-9, -9, -9]   # 410nm
+  - [-9, -9, -9]   # 415nm
+  - [-9, -9, -9]   # 420nm
+  - [-0.513098, -0.513098, -0.513098]   # 425nm
+  - [-0.51284, -0.51284, -0.51284]   # 430nm
+  - [-0.51284, -0.51284, -0.51284]   # 435nm
+  - [-0.51319, -0.51319, -0.51319]   # 440nm
+  - [-0.522893, -0.522893, -0.522893]   # 445nm
+  - [-0.53562, -0.53562, -0.53562]   # 450nm
+  - [-0.552412, -0.552412, -0.552412]   # 455nm
+  - [-0.571665, -0.571665, -0.571665]   # 460nm
+  - [-0.593122, -0.593122, -0.593122]   # 465nm
+  - [-0.611553, -0.611553, -0.611553]   # 470nm
+  - [-0.637438, -0.637438, -0.637438]   # 475nm
+  - [-0.665217, -0.665217, -0.665217]   # 480nm
+  - [-0.703161, -0.703161, -0.703161]   # 485nm
+  - [-0.742909, -0.742909, -0.742909]   # 490nm
+  - [-0.782594, -0.782594, -0.782594]   # 495nm
+  - [-0.815861, -0.815861, -0.815861]   # 500nm
+  - [-0.831143, -0.831143, -0.831143]   # 505nm
+  - [-0.834309, -0.834309, -0.834309]   # 510nm
+  - [-0.833599, -0.833599, -0.833599]   # 515nm
+  - [-0.823829, -0.823829, -0.823829]   # 520nm
+  - [-0.810809, -0.810809, -0.810809]   # 525nm
+  - [-0.796036, -0.796036, -0.796036]   # 530nm
+  - [-0.778081, -0.778081, -0.778081]   # 535nm
+  - [-0.759864, -0.759864, -0.759864]   # 540nm
+  - [-0.740987, -0.740987, -0.740987]   # 545nm
+  - [-0.724425, -0.724425, -0.724425]   # 550nm
+  - [-0.706653, -0.706653, -0.706653]   # 555nm
+  - [-0.693404, -0.693404, -0.693404]   # 560nm
+  - [-0.685993, -0.685993, -0.685993]   # 565nm
+  - [-0.68111, -0.68111, -0.68111]   # 570nm
+  - [-0.677547, -0.677547, -0.677547]   # 575nm
+  - [-0.680358, -0.680358, -0.680358]   # 580nm
+  - [-0.686794, -0.686794, -0.686794]   # 585nm
+  - [-0.696308, -0.696308, -0.696308]   # 590nm
+  - [-0.708955, -0.708955, -0.708955]   # 595nm
+  - [-0.720822, -0.720822, -0.720822]   # 600nm
+  - [-0.735995, -0.735995, -0.735995]   # 605nm
+  - [-0.751102, -0.751102, -0.751102]   # 610nm
+  - [-0.75613, -0.75613, -0.75613]   # 615nm
+  - [-0.747716, -0.747716, -0.747716]   # 620nm
+  - [-0.756689, -0.756689, -0.756689]   # 625nm
+  - [-0.785834, -0.785834, -0.785834]   # 630nm
+  - [-0.876194, -0.876194, -0.876194]   # 635nm
+  - [-1.06561, -1.06561, -1.06561]   # 640nm
+  - [-1.28125, -1.28125, -1.28125]   # 645nm
+  - [-1.53687, -1.53687, -1.53687]   # 650nm
+  - [-1.79873, -1.79873, -1.79873]   # 655nm
+  - [-2.0666, -2.0666, -2.0666]   # 660nm
+  - [-9, -9, -9]   # 665nm
+  - [-9, -9, -9]   # 670nm
+  - [-9, -9, -9]   # 675nm
+  - [-9, -9, -9]   # 680nm
+  - [-9, -9, -9]   # 685nm
+  - [-9, -9, -9]   # 690nm
+  - [-9, -9, -9]   # 695nm
+  - [-9, -9, -9]   # 700nm
+  - [-9, -9, -9]   # 705nm
+  - [-9, -9, -9]   # 710nm
+  - [-9, -9, -9]   # 715nm
+  - [-9, -9, -9]   # 720nm
+  - [-9, -9, -9]   # 725nm
+  - [-9, -9, -9]   # 730nm
+  - [-9, -9, -9]   # 735nm
+  - [-9, -9, -9]   # 740nm
+  - [-9, -9, -9]   # 745nm
+  - [-9, -9, -9]   # 750nm
+  - [-9, -9, -9]   # 755nm
+  - [-9, -9, -9]   # 760nm
+  - [-9, -9, -9]   # 765nm
+  - [-9, -9, -9]   # 770nm
+  - [-9, -9, -9]   # 775nm
+  - [-9, -9, -9]   # 780nm
+
+# Developed silver: neutral across the band.
+dye_density:
+  - [0.333333, 0.333333, 0.333333]   # 380nm
+  - [0.333333, 0.333333, 0.333333]   # 385nm
+  - [0.333333, 0.333333, 0.333333]   # 390nm
+  - [0.333333, 0.333333, 0.333333]   # 395nm
+  - [0.333333, 0.333333, 0.333333]   # 400nm
+  - [0.333333, 0.333333, 0.333333]   # 405nm
+  - [0.333333, 0.333333, 0.333333]   # 410nm
+  - [0.333333, 0.333333, 0.333333]   # 415nm
+  - [0.333333, 0.333333, 0.333333]   # 420nm
+  - [0.333333, 0.333333, 0.333333]   # 425nm
+  - [0.333333, 0.333333, 0.333333]   # 430nm
+  - [0.333333, 0.333333, 0.333333]   # 435nm
+  - [0.333333, 0.333333, 0.333333]   # 440nm
+  - [0.333333, 0.333333, 0.333333]   # 445nm
+  - [0.333333, 0.333333, 0.333333]   # 450nm
+  - [0.333333, 0.333333, 0.333333]   # 455nm
+  - [0.333333, 0.333333, 0.333333]   # 460nm
+  - [0.333333, 0.333333, 0.333333]   # 465nm
+  - [0.333333, 0.333333, 0.333333]   # 470nm
+  - [0.333333, 0.333333, 0.333333]   # 475nm
+  - [0.333333, 0.333333, 0.333333]   # 480nm
+  - [0.333333, 0.333333, 0.333333]   # 485nm
+  - [0.333333, 0.333333, 0.333333]   # 490nm
+  - [0.333333, 0.333333, 0.333333]   # 495nm
+  - [0.333333, 0.333333, 0.333333]   # 500nm
+  - [0.333333, 0.333333, 0.333333]   # 505nm
+  - [0.333333, 0.333333, 0.333333]   # 510nm
+  - [0.333333, 0.333333, 0.333333]   # 515nm
+  - [0.333333, 0.333333, 0.333333]   # 520nm
+  - [0.333333, 0.333333, 0.333333]   # 525nm
+  - [0.333333, 0.333333, 0.333333]   # 530nm
+  - [0.333333, 0.333333, 0.333333]   # 535nm
+  - [0.333333, 0.333333, 0.333333]   # 540nm
+  - [0.333333, 0.333333, 0.333333]   # 545nm
+  - [0.333333, 0.333333, 0.333333]   # 550nm
+  - [0.333333, 0.333333, 0.333333]   # 555nm
+  - [0.333333, 0.333333, 0.333333]   # 560nm
+  - [0.333333, 0.333333, 0.333333]   # 565nm
+  - [0.333333, 0.333333, 0.333333]   # 570nm
+  - [0.333333, 0.333333, 0.333333]   # 575nm
+  - [0.333333, 0.333333, 0.333333]   # 580nm
+  - [0.333333, 0.333333, 0.333333]   # 585nm
+  - [0.333333, 0.333333, 0.333333]   # 590nm
+  - [0.333333, 0.333333, 0.333333]   # 595nm
+  - [0.333333, 0.333333, 0.333333]   # 600nm
+  - [0.333333, 0.333333, 0.333333]   # 605nm
+  - [0.333333, 0.333333, 0.333333]   # 610nm
+  - [0.333333, 0.333333, 0.333333]   # 615nm
+  - [0.333333, 0.333333, 0.333333]   # 620nm
+  - [0.333333, 0.333333, 0.333333]   # 625nm
+  - [0.333333, 0.333333, 0.333333]   # 630nm
+  - [0.333333, 0.333333, 0.333333]   # 635nm
+  - [0.333333, 0.333333, 0.333333]   # 640nm
+  - [0.333333, 0.333333, 0.333333]   # 645nm
+  - [0.333333, 0.333333, 0.333333]   # 650nm
+  - [0.333333, 0.333333, 0.333333]   # 655nm
+  - [0.333333, 0.333333, 0.333333]   # 660nm
+  - [0.333333, 0.333333, 0.333333]   # 665nm
+  - [0.333333, 0.333333, 0.333333]   # 670nm
+  - [0.333333, 0.333333, 0.333333]   # 675nm
+  - [0.333333, 0.333333, 0.333333]   # 680nm
+  - [0.333333, 0.333333, 0.333333]   # 685nm
+  - [0.333333, 0.333333, 0.333333]   # 690nm
+  - [0.333333, 0.333333, 0.333333]   # 695nm
+  - [0.333333, 0.333333, 0.333333]   # 700nm
+  - [0.333333, 0.333333, 0.333333]   # 705nm
+  - [0.333333, 0.333333, 0.333333]   # 710nm
+  - [0.333333, 0.333333, 0.333333]   # 715nm
+  - [0.333333, 0.333333, 0.333333]   # 720nm
+  - [0.333333, 0.333333, 0.333333]   # 725nm
+  - [0.333333, 0.333333, 0.333333]   # 730nm
+  - [0.333333, 0.333333, 0.333333]   # 735nm
+  - [0.333333, 0.333333, 0.333333]   # 740nm
+  - [0.333333, 0.333333, 0.333333]   # 745nm
+  - [0.333333, 0.333333, 0.333333]   # 750nm
+  - [0.333333, 0.333333, 0.333333]   # 755nm
+  - [0.333333, 0.333333, 0.333333]   # 760nm
+  - [0.333333, 0.333333, 0.333333]   # 765nm
+  - [0.333333, 0.333333, 0.333333]   # 770nm
+  - [0.333333, 0.333333, 0.333333]   # 775nm
+  - [0.333333, 0.333333, 0.333333]   # 780nm
+
+# Base plus fog. No orange mask on a black-and-white film.
+base_density: [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
+
+# The characteristic curve, parametric.
+log_exposure_min: -3
+log_exposure_max: 4
+density_curves:
+  - [3.5129e-07, 3.5129e-07, 3.5129e-07]
+  - [4.2083e-07, 4.2083e-07, 4.2083e-07]
+  - [5.0412e-07, 5.0412e-07, 5.0412e-07]
+  - [6.039e-07, 6.039e-07, 6.039e-07]
+  - [7.2343e-07, 7.2343e-07, 7.2343e-07]
+  - [8.6662e-07, 8.6662e-07, 8.6662e-07]
+  - [1.0381e-06, 1.0381e-06, 1.0381e-06]
+  - [1.2436e-06, 1.2436e-06, 1.2436e-06]
+  - [1.4898e-06, 1.4898e-06, 1.4898e-06]
+  - [1.7846e-06, 1.7846e-06, 1.7846e-06]
+  - [2.1379e-06, 2.1379e-06, 2.1379e-06]
+  - [2.561e-06, 2.561e-06, 2.561e-06]
+  - [3.0679e-06, 3.0679e-06, 3.0679e-06]
+  - [3.6751e-06, 3.6751e-06, 3.6751e-06]
+  - [4.4025e-06, 4.4025e-06, 4.4025e-06]
+  - [5.2739e-06, 5.2739e-06, 5.2739e-06]
+  - [6.3177e-06, 6.3177e-06, 6.3177e-06]
+  - [7.5681e-06, 7.5681e-06, 7.5681e-06]
+  - [9.066e-06, 9.066e-06, 9.066e-06]
+  - [1.086e-05, 1.086e-05, 1.086e-05]
+  - [1.301e-05, 1.301e-05, 1.301e-05]
+  - [1.5585e-05, 1.5585e-05, 1.5585e-05]
+  - [1.8669e-05, 1.8669e-05, 1.8669e-05]
+  - [2.2364e-05, 2.2364e-05, 2.2364e-05]
+  - [2.6789e-05, 2.6789e-05, 2.6789e-05]
+  - [3.2091e-05, 3.2091e-05, 3.2091e-05]
+  - [3.8441e-05, 3.8441e-05, 3.8441e-05]
+  - [4.6048e-05, 4.6048e-05, 4.6048e-05]
+  - [5.516e-05, 5.516e-05, 5.516e-05]
+  - [6.6074e-05, 6.6074e-05, 6.6074e-05]
+  - [7.9146e-05, 7.9146e-05, 7.9146e-05]
+  - [9.4804e-05, 9.4804e-05, 9.4804e-05]
+  - [0.00011356, 0.00011356, 0.00011356]
+  - [0.00013602, 0.00013602, 0.00013602]
+  - [0.00016292, 0.00016292, 0.00016292]
+  - [0.00019513, 0.00019513, 0.00019513]
+  - [0.0002337, 0.0002337, 0.0002337]
+  - [0.00027989, 0.00027989, 0.00027989]
+  - [0.00033519, 0.00033519, 0.00033519]
+  - [0.00040139, 0.00040139, 0.00040139]
+  - [0.00048064, 0.00048064, 0.00048064]
+  - [0.00057548, 0.00057548, 0.00057548]
+  - [0.00068897, 0.00068897, 0.00068897]
+  - [0.00082475, 0.00082475, 0.00082475]
+  - [0.00098713, 0.00098713, 0.00098713]
+  - [0.0011813, 0.0011813, 0.0011813]
+  - [0.0014134, 0.0014134, 0.0014134]
+  - [0.0016906, 0.0016906, 0.0016906]
+  - [0.0020217, 0.0020217, 0.0020217]
+  - [0.0024167, 0.0024167, 0.0024167]
+  - [0.0028878, 0.0028878, 0.0028878]
+  - [0.0034491, 0.0034491, 0.0034491]
+  - [0.004117, 0.004117, 0.004117]
+  - [0.004911, 0.004911, 0.004911]
+  - [0.0058534, 0.0058534, 0.0058534]
+  - [0.0069701, 0.0069701, 0.0069701]
+  - [0.0082906, 0.0082906, 0.0082906]
+  - [0.0098485, 0.0098485, 0.0098485]
+  - [0.011681, 0.011681, 0.011681]
+  - [0.013831, 0.013831, 0.013831]
+  - [0.016344, 0.016344, 0.016344]
+  - [0.019268, 0.019268, 0.019268]
+  - [0.022655, 0.022655, 0.022655]
+  - [0.026559, 0.026559, 0.026559]
+  - [0.031032, 0.031032, 0.031032]
+  - [0.036126, 0.036126, 0.036126]
+  - [0.041886, 0.041886, 0.041886]
+  - [0.048352, 0.048352, 0.048352]
+  - [0.055556, 0.055556, 0.055556]
+  - [0.063518, 0.063518, 0.063518]
+  - [0.072247, 0.072247, 0.072247]
+  - [0.081739, 0.081739, 0.081739]
+  - [0.09198, 0.09198, 0.09198]
+  - [0.10294, 0.10294, 0.10294]
+  - [0.11459, 0.11459, 0.11459]
+  - [0.12687, 0.12687, 0.12687]
+  - [0.13975, 0.13975, 0.13975]
+  - [0.15317, 0.15317, 0.15317]
+  - [0.16707, 0.16707, 0.16707]
+  - [0.18141, 0.18141, 0.18141]
+  - [0.19613, 0.19613, 0.19613]
+  - [0.21119, 0.21119, 0.21119]
+  - [0.22653, 0.22653, 0.22653]
+  - [0.24214, 0.24214, 0.24214]
+  - [0.25796, 0.25796, 0.25796]
+  - [0.27396, 0.27396, 0.27396]
+  - [0.29013, 0.29013, 0.29013]
+  - [0.30643, 0.30643, 0.30643]
+  - [0.32284, 0.32284, 0.32284]
+  - [0.33935, 0.33935, 0.33935]
+  - [0.35595, 0.35595, 0.35595]
+  - [0.37261, 0.37261, 0.37261]
+  - [0.38933, 0.38933, 0.38933]
+  - [0.4061, 0.4061, 0.4061]
+  - [0.42291, 0.42291, 0.42291]
+  - [0.43975, 0.43975, 0.43975]
+  - [0.45663, 0.45663, 0.45663]
+  - [0.47352, 0.47352, 0.47352]
+  - [0.49044, 0.49044, 0.49044]
+  - [0.50737, 0.50737, 0.50737]
+  - [0.52432, 0.52432, 0.52432]
+  - [0.54128, 0.54128, 0.54128]
+  - [0.55825, 0.55825, 0.55825]
+  - [0.57523, 0.57523, 0.57523]
+  - [0.59222, 0.59222, 0.59222]
+  - [0.60921, 0.60921, 0.60921]
+  - [0.6262, 0.6262, 0.6262]
+  - [0.6432, 0.6432, 0.6432]
+  - [0.6602, 0.6602, 0.6602]
+  - [0.67721, 0.67721, 0.67721]
+  - [0.69422, 0.69422, 0.69422]
+  - [0.71123, 0.71123, 0.71123]
+  - [0.72824, 0.72824, 0.72824]
+  - [0.74525, 0.74525, 0.74525]
+  - [0.76226, 0.76226, 0.76226]
+  - [0.77928, 0.77928, 0.77928]
+  - [0.79629, 0.79629, 0.79629]
+  - [0.81331, 0.81331, 0.81331]
+  - [0.83033, 0.83033, 0.83033]
+  - [0.84735, 0.84735, 0.84735]
+  - [0.86436, 0.86436, 0.86436]
+  - [0.88138, 0.88138, 0.88138]
+  - [0.8984, 0.8984, 0.8984]
+  - [0.91542, 0.91542, 0.91542]
+  - [0.93244, 0.93244, 0.93244]
+  - [0.94945, 0.94945, 0.94945]
+  - [0.96647, 0.96647, 0.96647]
+  - [0.98349, 0.98349, 0.98349]
+  - [1.0005, 1.0005, 1.0005]
+  - [1.0175, 1.0175, 1.0175]
+  - [1.0346, 1.0346, 1.0346]
+  - [1.0516, 1.0516, 1.0516]
+  - [1.0686, 1.0686, 1.0686]
+  - [1.0856, 1.0856, 1.0856]
+  - [1.1026, 1.1026, 1.1026]
+  - [1.1196, 1.1196, 1.1196]
+  - [1.1367, 1.1367, 1.1367]
+  - [1.1537, 1.1537, 1.1537]
+  - [1.1707, 1.1707, 1.1707]
+  - [1.1877, 1.1877, 1.1877]
+  - [1.2047, 1.2047, 1.2047]
+  - [1.2218, 1.2218, 1.2218]
+  - [1.2388, 1.2388, 1.2388]
+  - [1.2558, 1.2558, 1.2558]
+  - [1.2728, 1.2728, 1.2728]
+  - [1.2898, 1.2898, 1.2898]
+  - [1.3069, 1.3069, 1.3069]
+  - [1.3239, 1.3239, 1.3239]
+  - [1.3409, 1.3409, 1.3409]
+  - [1.3579, 1.3579, 1.3579]
+  - [1.3749, 1.3749, 1.3749]
+  - [1.392, 1.392, 1.392]
+  - [1.409, 1.409, 1.409]
+  - [1.426, 1.426, 1.426]
+  - [1.443, 1.443, 1.443]
+  - [1.46, 1.46, 1.46]
+  - [1.477, 1.477, 1.477]
+  - [1.4941, 1.4941, 1.4941]
+  - [1.5111, 1.5111, 1.5111]
+  - [1.5281, 1.5281, 1.5281]
+  - [1.5451, 1.5451, 1.5451]
+  - [1.5621, 1.5621, 1.5621]
+  - [1.5791, 1.5791, 1.5791]
+  - [1.5962, 1.5962, 1.5962]
+  - [1.6132, 1.6132, 1.6132]
+  - [1.6302, 1.6302, 1.6302]
+  - [1.6472, 1.6472, 1.6472]
+  - [1.6642, 1.6642, 1.6642]
+  - [1.6812, 1.6812, 1.6812]
+  - [1.6982, 1.6982, 1.6982]
+  - [1.7153, 1.7153, 1.7153]
+  - [1.7323, 1.7323, 1.7323]
+  - [1.7493, 1.7493, 1.7493]
+  - [1.7663, 1.7663, 1.7663]
+  - [1.7833, 1.7833, 1.7833]
+  - [1.8003, 1.8003, 1.8003]
+  - [1.8173, 1.8173, 1.8173]
+  - [1.8343, 1.8343, 1.8343]
+  - [1.8512, 1.8512, 1.8512]
+  - [1.8682, 1.8682, 1.8682]
+  - [1.8852, 1.8852, 1.8852]
+  - [1.9022, 1.9022, 1.9022]
+  - [1.9191, 1.9191, 1.9191]
+  - [1.9361, 1.9361, 1.9361]
+  - [1.953, 1.953, 1.953]
+  - [1.97, 1.97, 1.97]
+  - [1.9869, 1.9869, 1.9869]
+  - [2.0038, 2.0038, 2.0038]
+  - [2.0207, 2.0207, 2.0207]
+  - [2.0375, 2.0375, 2.0375]
+  - [2.0544, 2.0544, 2.0544]
+  - [2.0712, 2.0712, 2.0712]
+  - [2.088, 2.088, 2.088]
+  - [2.1047, 2.1047, 2.1047]
+  - [2.1214, 2.1214, 2.1214]
+  - [2.1381, 2.1381, 2.1381]
+  - [2.1547, 2.1547, 2.1547]
+  - [2.1713, 2.1713, 2.1713]
+  - [2.1878, 2.1878, 2.1878]
+  - [2.2042, 2.2042, 2.2042]
+  - [2.2205, 2.2205, 2.2205]
+  - [2.2367, 2.2367, 2.2367]
+  - [2.2529, 2.2529, 2.2529]
+  - [2.2688, 2.2688, 2.2688]
+  - [2.2847, 2.2847, 2.2847]
+  - [2.3003, 2.3003, 2.3003]
+  - [2.3158, 2.3158, 2.3158]
+  - [2.3311, 2.3311, 2.3311]
+  - [2.3462, 2.3462, 2.3462]
+  - [2.361, 2.361, 2.361]
+  - [2.3755, 2.3755, 2.3755]
+  - [2.3896, 2.3896, 2.3896]
+  - [2.4035, 2.4035, 2.4035]
+  - [2.417, 2.417, 2.417]
+  - [2.43, 2.43, 2.43]
+  - [2.4426, 2.4426, 2.4426]
+  - [2.4547, 2.4547, 2.4547]
+  - [2.4664, 2.4664, 2.4664]
+  - [2.4775, 2.4775, 2.4775]
+  - [2.488, 2.488, 2.488]
+  - [2.498, 2.498, 2.498]
+  - [2.5074, 2.5074, 2.5074]
+  - [2.5162, 2.5162, 2.5162]
+  - [2.5244, 2.5244, 2.5244]
+  - [2.532, 2.532, 2.532]
+  - [2.539, 2.539, 2.539]
+  - [2.5455, 2.5455, 2.5455]
+  - [2.5514, 2.5514, 2.5514]
+  - [2.5567, 2.5567, 2.5567]
+  - [2.5616, 2.5616, 2.5616]
+  - [2.566, 2.566, 2.566]
+  - [2.5699, 2.5699, 2.5699]
+  - [2.5735, 2.5735, 2.5735]
+  - [2.5766, 2.5766, 2.5766]
+  - [2.5795, 2.5795, 2.5795]
+  - [2.582, 2.582, 2.582]
+  - [2.5842, 2.5842, 2.5842]
+  - [2.5861, 2.5861, 2.5861]
+  - [2.5879, 2.5879, 2.5879]
+  - [2.5894, 2.5894, 2.5894]
+  - [2.5907, 2.5907, 2.5907]
+  - [2.5919, 2.5919, 2.5919]
+  - [2.5929, 2.5929, 2.5929]
+  - [2.5938, 2.5938, 2.5938]
+  - [2.5946, 2.5946, 2.5946]
+  - [2.5953, 2.5953, 2.5953]
+  - [2.5959, 2.5959, 2.5959]
+  - [2.5964, 2.5964, 2.5964]
+  - [2.5969, 2.5969, 2.5969]
+  - [2.5973, 2.5973, 2.5973]
+  - [2.5977, 2.5977, 2.5977]
+  - [2.598, 2.598, 2.598]
+  - [2.5982, 2.5982, 2.5982]
+  - [2.5985, 2.5985, 2.5985]
+  - [2.5987, 2.5987, 2.5987]
+  - [2.5988, 2.5988, 2.5988]
diff --git a/core/dr-film/profiles/ilford_pan_f_plus.yaml b/core/dr-film/profiles/ilford_pan_f_plus.yaml
new file mode 100644
index 0000000..ef9a178
--- /dev/null
+++ b/core/dr-film/profiles/ilford_pan_f_plus.yaml
@@ -0,0 +1,459 @@
+# Generated by tools/film-profiles/convert.py.
+#
+# *** CONSTRUCTED, NOT MEASURED. ***
+#
+# Ilford publish this film's spectral sensitivity and characteristic
+# curve as graphs, and no granularity figure at all, so this profile is
+# built rather than extracted. Its speed is the published ISO rating,
+# and its contrast is ISO 6:1993's normal development (average gradient
+# 0.62). Its spectral response is borrowed from Kodak Double-X, a
+# *measured* panchromatic negative, shifted by the speed difference.
+# Its granularity is an estimate, ordered against the other films here.
+#
+# So it renders as a film of this speed and contrast, not as a
+# measurement of this emulsion. Replace it outright if anyone digitises
+# the real curves.
+
+version: 'constructed-1'
+stock: ilford_pan_f_plus
+name: 'Ilford Pan F Plus'
+kind: negative          # negative | positive
+support: film    # film | paper
+stage: filming        # filming | printing
+monochrome: true
+reference_illuminant: D55
+viewing_illuminant: D50
+
+rms_granularity: [5, 5, 5]
+
+# log10 spectral sensitivity per layer, 380-780nm at 5nm.
+log_sensitivity:
+  - [-9, -9, -9]   # 380nm
+  - [-9, -9, -9]   # 385nm
+  - [-9, -9, -9]   # 390nm
+  - [-9, -9, -9]   # 395nm
+  - [-9, -9, -9]   # 400nm
+  - [-9, -9, -9]   # 405nm
+  - [-9, -9, -9]   # 410nm
+  - [-9, -9, -9]   # 415nm
+  - [-9, -9, -9]   # 420nm
+  - [-1.41619, -1.41619, -1.41619]   # 425nm
+  - [-1.41593, -1.41593, -1.41593]   # 430nm
+  - [-1.41593, -1.41593, -1.41593]   # 435nm
+  - [-1.41628, -1.41628, -1.41628]   # 440nm
+  - [-1.42598, -1.42598, -1.42598]   # 445nm
+  - [-1.43871, -1.43871, -1.43871]   # 450nm
+  - [-1.4555, -1.4555, -1.4555]   # 455nm
+  - [-1.47476, -1.47476, -1.47476]   # 460nm
+  - [-1.49621, -1.49621, -1.49621]   # 465nm
+  - [-1.51464, -1.51464, -1.51464]   # 470nm
+  - [-1.54053, -1.54053, -1.54053]   # 475nm
+  - [-1.56831, -1.56831, -1.56831]   # 480nm
+  - [-1.60625, -1.60625, -1.60625]   # 485nm
+  - [-1.646, -1.646, -1.646]   # 490nm
+  - [-1.68568, -1.68568, -1.68568]   # 495nm
+  - [-1.71895, -1.71895, -1.71895]   # 500nm
+  - [-1.73423, -1.73423, -1.73423]   # 505nm
+  - [-1.7374, -1.7374, -1.7374]   # 510nm
+  - [-1.73669, -1.73669, -1.73669]   # 515nm
+  - [-1.72692, -1.72692, -1.72692]   # 520nm
+  - [-1.7139, -1.7139, -1.7139]   # 525nm
+  - [-1.69913, -1.69913, -1.69913]   # 530nm
+  - [-1.68117, -1.68117, -1.68117]   # 535nm
+  - [-1.66295, -1.66295, -1.66295]   # 540nm
+  - [-1.64408, -1.64408, -1.64408]   # 545nm
+  - [-1.62751, -1.62751, -1.62751]   # 550nm
+  - [-1.60974, -1.60974, -1.60974]   # 555nm
+  - [-1.59649, -1.59649, -1.59649]   # 560nm
+  - [-1.58908, -1.58908, -1.58908]   # 565nm
+  - [-1.5842, -1.5842, -1.5842]   # 570nm
+  - [-1.58064, -1.58064, -1.58064]   # 575nm
+  - [-1.58345, -1.58345, -1.58345]   # 580nm
+  - [-1.58988, -1.58988, -1.58988]   # 585nm
+  - [-1.5994, -1.5994, -1.5994]   # 590nm
+  - [-1.61204, -1.61204, -1.61204]   # 595nm
+  - [-1.62391, -1.62391, -1.62391]   # 600nm
+  - [-1.63908, -1.63908, -1.63908]   # 605nm
+  - [-1.65419, -1.65419, -1.65419]   # 610nm
+  - [-1.65922, -1.65922, -1.65922]   # 615nm
+  - [-1.65081, -1.65081, -1.65081]   # 620nm
+  - [-1.65978, -1.65978, -1.65978]   # 625nm
+  - [-1.68892, -1.68892, -1.68892]   # 630nm
+  - [-1.77928, -1.77928, -1.77928]   # 635nm
+  - [-1.9687, -1.9687, -1.9687]   # 640nm
+  - [-2.18434, -2.18434, -2.18434]   # 645nm
+  - [-2.43996, -2.43996, -2.43996]   # 650nm
+  - [-2.70182, -2.70182, -2.70182]   # 655nm
+  - [-2.96969, -2.96969, -2.96969]   # 660nm
+  - [-9, -9, -9]   # 665nm
+  - [-9, -9, -9]   # 670nm
+  - [-9, -9, -9]   # 675nm
+  - [-9, -9, -9]   # 680nm
+  - [-9, -9, -9]   # 685nm
+  - [-9, -9, -9]   # 690nm
+  - [-9, -9, -9]   # 695nm
+  - [-9, -9, -9]   # 700nm
+  - [-9, -9, -9]   # 705nm
+  - [-9, -9, -9]   # 710nm
+  - [-9, -9, -9]   # 715nm
+  - [-9, -9, -9]   # 720nm
+  - [-9, -9, -9]   # 725nm
+  - [-9, -9, -9]   # 730nm
+  - [-9, -9, -9]   # 735nm
+  - [-9, -9, -9]   # 740nm
+  - [-9, -9, -9]   # 745nm
+  - [-9, -9, -9]   # 750nm
+  - [-9, -9, -9]   # 755nm
+  - [-9, -9, -9]   # 760nm
+  - [-9, -9, -9]   # 765nm
+  - [-9, -9, -9]   # 770nm
+  - [-9, -9, -9]   # 775nm
+  - [-9, -9, -9]   # 780nm
+
+# Developed silver: neutral across the band.
+dye_density:
+  - [0.333333, 0.333333, 0.333333]   # 380nm
+  - [0.333333, 0.333333, 0.333333]   # 385nm
+  - [0.333333, 0.333333, 0.333333]   # 390nm
+  - [0.333333, 0.333333, 0.333333]   # 395nm
+  - [0.333333, 0.333333, 0.333333]   # 400nm
+  - [0.333333, 0.333333, 0.333333]   # 405nm
+  - [0.333333, 0.333333, 0.333333]   # 410nm
+  - [0.333333, 0.333333, 0.333333]   # 415nm
+  - [0.333333, 0.333333, 0.333333]   # 420nm
+  - [0.333333, 0.333333, 0.333333]   # 425nm
+  - [0.333333, 0.333333, 0.333333]   # 430nm
+  - [0.333333, 0.333333, 0.333333]   # 435nm
+  - [0.333333, 0.333333, 0.333333]   # 440nm
+  - [0.333333, 0.333333, 0.333333]   # 445nm
+  - [0.333333, 0.333333, 0.333333]   # 450nm
+  - [0.333333, 0.333333, 0.333333]   # 455nm
+  - [0.333333, 0.333333, 0.333333]   # 460nm
+  - [0.333333, 0.333333, 0.333333]   # 465nm
+  - [0.333333, 0.333333, 0.333333]   # 470nm
+  - [0.333333, 0.333333, 0.333333]   # 475nm
+  - [0.333333, 0.333333, 0.333333]   # 480nm
+  - [0.333333, 0.333333, 0.333333]   # 485nm
+  - [0.333333, 0.333333, 0.333333]   # 490nm
+  - [0.333333, 0.333333, 0.333333]   # 495nm
+  - [0.333333, 0.333333, 0.333333]   # 500nm
+  - [0.333333, 0.333333, 0.333333]   # 505nm
+  - [0.333333, 0.333333, 0.333333]   # 510nm
+  - [0.333333, 0.333333, 0.333333]   # 515nm
+  - [0.333333, 0.333333, 0.333333]   # 520nm
+  - [0.333333, 0.333333, 0.333333]   # 525nm
+  - [0.333333, 0.333333, 0.333333]   # 530nm
+  - [0.333333, 0.333333, 0.333333]   # 535nm
+  - [0.333333, 0.333333, 0.333333]   # 540nm
+  - [0.333333, 0.333333, 0.333333]   # 545nm
+  - [0.333333, 0.333333, 0.333333]   # 550nm
+  - [0.333333, 0.333333, 0.333333]   # 555nm
+  - [0.333333, 0.333333, 0.333333]   # 560nm
+  - [0.333333, 0.333333, 0.333333]   # 565nm
+  - [0.333333, 0.333333, 0.333333]   # 570nm
+  - [0.333333, 0.333333, 0.333333]   # 575nm
+  - [0.333333, 0.333333, 0.333333]   # 580nm
+  - [0.333333, 0.333333, 0.333333]   # 585nm
+  - [0.333333, 0.333333, 0.333333]   # 590nm
+  - [0.333333, 0.333333, 0.333333]   # 595nm
+  - [0.333333, 0.333333, 0.333333]   # 600nm
+  - [0.333333, 0.333333, 0.333333]   # 605nm
+  - [0.333333, 0.333333, 0.333333]   # 610nm
+  - [0.333333, 0.333333, 0.333333]   # 615nm
+  - [0.333333, 0.333333, 0.333333]   # 620nm
+  - [0.333333, 0.333333, 0.333333]   # 625nm
+  - [0.333333, 0.333333, 0.333333]   # 630nm
+  - [0.333333, 0.333333, 0.333333]   # 635nm
+  - [0.333333, 0.333333, 0.333333]   # 640nm
+  - [0.333333, 0.333333, 0.333333]   # 645nm
+  - [0.333333, 0.333333, 0.333333]   # 650nm
+  - [0.333333, 0.333333, 0.333333]   # 655nm
+  - [0.333333, 0.333333, 0.333333]   # 660nm
+  - [0.333333, 0.333333, 0.333333]   # 665nm
+  - [0.333333, 0.333333, 0.333333]   # 670nm
+  - [0.333333, 0.333333, 0.333333]   # 675nm
+  - [0.333333, 0.333333, 0.333333]   # 680nm
+  - [0.333333, 0.333333, 0.333333]   # 685nm
+  - [0.333333, 0.333333, 0.333333]   # 690nm
+  - [0.333333, 0.333333, 0.333333]   # 695nm
+  - [0.333333, 0.333333, 0.333333]   # 700nm
+  - [0.333333, 0.333333, 0.333333]   # 705nm
+  - [0.333333, 0.333333, 0.333333]   # 710nm
+  - [0.333333, 0.333333, 0.333333]   # 715nm
+  - [0.333333, 0.333333, 0.333333]   # 720nm
+  - [0.333333, 0.333333, 0.333333]   # 725nm
+  - [0.333333, 0.333333, 0.333333]   # 730nm
+  - [0.333333, 0.333333, 0.333333]   # 735nm
+  - [0.333333, 0.333333, 0.333333]   # 740nm
+  - [0.333333, 0.333333, 0.333333]   # 745nm
+  - [0.333333, 0.333333, 0.333333]   # 750nm
+  - [0.333333, 0.333333, 0.333333]   # 755nm
+  - [0.333333, 0.333333, 0.333333]   # 760nm
+  - [0.333333, 0.333333, 0.333333]   # 765nm
+  - [0.333333, 0.333333, 0.333333]   # 770nm
+  - [0.333333, 0.333333, 0.333333]   # 775nm
+  - [0.333333, 0.333333, 0.333333]   # 780nm
+
+# Base plus fog. No orange mask on a black-and-white film.
+base_density: [0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
+
+# The characteristic curve, parametric.
+log_exposure_min: -3
+log_exposure_max: 4
+density_curves:
+  - [3.5129e-07, 3.5129e-07, 3.5129e-07]
+  - [4.2083e-07, 4.2083e-07, 4.2083e-07]
+  - [5.0412e-07, 5.0412e-07, 5.0412e-07]
+  - [6.039e-07, 6.039e-07, 6.039e-07]
+  - [7.2343e-07, 7.2343e-07, 7.2343e-07]
+  - [8.6662e-07, 8.6662e-07, 8.6662e-07]
+  - [1.0381e-06, 1.0381e-06, 1.0381e-06]
+  - [1.2436e-06, 1.2436e-06, 1.2436e-06]
+  - [1.4898e-06, 1.4898e-06, 1.4898e-06]
+  - [1.7846e-06, 1.7846e-06, 1.7846e-06]
+  - [2.1379e-06, 2.1379e-06, 2.1379e-06]
+  - [2.561e-06, 2.561e-06, 2.561e-06]
+  - [3.0679e-06, 3.0679e-06, 3.0679e-06]
+  - [3.6751e-06, 3.6751e-06, 3.6751e-06]
+  - [4.4025e-06, 4.4025e-06, 4.4025e-06]
+  - [5.2739e-06, 5.2739e-06, 5.2739e-06]
+  - [6.3177e-06, 6.3177e-06, 6.3177e-06]
+  - [7.5681e-06, 7.5681e-06, 7.5681e-06]
+  - [9.066e-06, 9.066e-06, 9.066e-06]
+  - [1.086e-05, 1.086e-05, 1.086e-05]
+  - [1.301e-05, 1.301e-05, 1.301e-05]
+  - [1.5585e-05, 1.5585e-05, 1.5585e-05]
+  - [1.8669e-05, 1.8669e-05, 1.8669e-05]
+  - [2.2364e-05, 2.2364e-05, 2.2364e-05]
+  - [2.6789e-05, 2.6789e-05, 2.6789e-05]
+  - [3.2091e-05, 3.2091e-05, 3.2091e-05]
+  - [3.8441e-05, 3.8441e-05, 3.8441e-05]
+  - [4.6048e-05, 4.6048e-05, 4.6048e-05]
+  - [5.516e-05, 5.516e-05, 5.516e-05]
+  - [6.6074e-05, 6.6074e-05, 6.6074e-05]
+  - [7.9146e-05, 7.9146e-05, 7.9146e-05]
+  - [9.4804e-05, 9.4804e-05, 9.4804e-05]
+  - [0.00011356, 0.00011356, 0.00011356]
+  - [0.00013602, 0.00013602, 0.00013602]
+  - [0.00016292, 0.00016292, 0.00016292]
+  - [0.00019513, 0.00019513, 0.00019513]
+  - [0.0002337, 0.0002337, 0.0002337]
+  - [0.00027989, 0.00027989, 0.00027989]
+  - [0.00033519, 0.00033519, 0.00033519]
+  - [0.00040139, 0.00040139, 0.00040139]
+  - [0.00048064, 0.00048064, 0.00048064]
+  - [0.00057548, 0.00057548, 0.00057548]
+  - [0.00068897, 0.00068897, 0.00068897]
+  - [0.00082475, 0.00082475, 0.00082475]
+  - [0.00098713, 0.00098713, 0.00098713]
+  - [0.0011813, 0.0011813, 0.0011813]
+  - [0.0014134, 0.0014134, 0.0014134]
+  - [0.0016906, 0.0016906, 0.0016906]
+  - [0.0020217, 0.0020217, 0.0020217]
+  - [0.0024167, 0.0024167, 0.0024167]
+  - [0.0028878, 0.0028878, 0.0028878]
+  - [0.0034491, 0.0034491, 0.0034491]
+  - [0.004117, 0.004117, 0.004117]
+  - [0.004911, 0.004911, 0.004911]
+  - [0.0058534, 0.0058534, 0.0058534]
+  - [0.0069701, 0.0069701, 0.0069701]
+  - [0.0082906, 0.0082906, 0.0082906]
+  - [0.0098485, 0.0098485, 0.0098485]
+  - [0.011681, 0.011681, 0.011681]
+  - [0.013831, 0.013831, 0.013831]
+  - [0.016344, 0.016344, 0.016344]
+  - [0.019268, 0.019268, 0.019268]
+  - [0.022655, 0.022655, 0.022655]
+  - [0.026559, 0.026559, 0.026559]
+  - [0.031032, 0.031032, 0.031032]
+  - [0.036126, 0.036126, 0.036126]
+  - [0.041886, 0.041886, 0.041886]
+  - [0.048352, 0.048352, 0.048352]
+  - [0.055556, 0.055556, 0.055556]
+  - [0.063518, 0.063518, 0.063518]
+  - [0.072247, 0.072247, 0.072247]
+  - [0.081739, 0.081739, 0.081739]
+  - [0.09198, 0.09198, 0.09198]
+  - [0.10294, 0.10294, 0.10294]
+  - [0.11459, 0.11459, 0.11459]
+  - [0.12687, 0.12687, 0.12687]
+  - [0.13975, 0.13975, 0.13975]
+  - [0.15317, 0.15317, 0.15317]
+  - [0.16707, 0.16707, 0.16707]
+  - [0.18141, 0.18141, 0.18141]
+  - [0.19613, 0.19613, 0.19613]
+  - [0.21119, 0.21119, 0.21119]
+  - [0.22653, 0.22653, 0.22653]
+  - [0.24214, 0.24214, 0.24214]
+  - [0.25796, 0.25796, 0.25796]
+  - [0.27396, 0.27396, 0.27396]
+  - [0.29013, 0.29013, 0.29013]
+  - [0.30643, 0.30643, 0.30643]
+  - [0.32284, 0.32284, 0.32284]
+  - [0.33935, 0.33935, 0.33935]
+  - [0.35595, 0.35595, 0.35595]
+  - [0.37261, 0.37261, 0.37261]
+  - [0.38933, 0.38933, 0.38933]
+  - [0.4061, 0.4061, 0.4061]
+  - [0.42291, 0.42291, 0.42291]
+  - [0.43975, 0.43975, 0.43975]
+  - [0.45663, 0.45663, 0.45663]
+  - [0.47352, 0.47352, 0.47352]
+  - [0.49044, 0.49044, 0.49044]
+  - [0.50737, 0.50737, 0.50737]
+  - [0.52432, 0.52432, 0.52432]
+  - [0.54128, 0.54128, 0.54128]
+  - [0.55825, 0.55825, 0.55825]
+  - [0.57523, 0.57523, 0.57523]
+  - [0.59222, 0.59222, 0.59222]
+  - [0.60921, 0.60921, 0.60921]
+  - [0.6262, 0.6262, 0.6262]
+  - [0.6432, 0.6432, 0.6432]
+  - [0.6602, 0.6602, 0.6602]
+  - [0.67721, 0.67721, 0.67721]
+  - [0.69422, 0.69422, 0.69422]
+  - [0.71123, 0.71123, 0.71123]
+  - [0.72824, 0.72824, 0.72824]
+  - [0.74525, 0.74525, 0.74525]
+  - [0.76226, 0.76226, 0.76226]
+  - [0.77928, 0.77928, 0.77928]
+  - [0.79629, 0.79629, 0.79629]
+  - [0.81331, 0.81331, 0.81331]
+  - [0.83033, 0.83033, 0.83033]
+  - [0.84734, 0.84734, 0.84734]
+  - [0.86436, 0.86436, 0.86436]
+  - [0.88138, 0.88138, 0.88138]
+  - [0.8984, 0.8984, 0.8984]
+  - [0.91542, 0.91542, 0.91542]
+  - [0.93244, 0.93244, 0.93244]
+  - [0.94945, 0.94945, 0.94945]
+  - [0.96647, 0.96647, 0.96647]
+  - [0.98349, 0.98349, 0.98349]
+  - [1.0005, 1.0005, 1.0005]
+  - [1.0175, 1.0175, 1.0175]
+  - [1.0345, 1.0345, 1.0345]
+  - [1.0516, 1.0516, 1.0516]
+  - [1.0686, 1.0686, 1.0686]
+  - [1.0856, 1.0856, 1.0856]
+  - [1.1026, 1.1026, 1.1026]
+  - [1.1196, 1.1196, 1.1196]
+  - [1.1367, 1.1367, 1.1367]
+  - [1.1537, 1.1537, 1.1537]
+  - [1.1707, 1.1707, 1.1707]
+  - [1.1877, 1.1877, 1.1877]
+  - [1.2047, 1.2047, 1.2047]
+  - [1.2218, 1.2218, 1.2218]
+  - [1.2388, 1.2388, 1.2388]
+  - [1.2558, 1.2558, 1.2558]
+  - [1.2728, 1.2728, 1.2728]
+  - [1.2898, 1.2898, 1.2898]
+  - [1.3069, 1.3069, 1.3069]
+  - [1.3239, 1.3239, 1.3239]
+  - [1.3409, 1.3409, 1.3409]
+  - [1.3579, 1.3579, 1.3579]
+  - [1.3749, 1.3749, 1.3749]
+  - [1.3919, 1.3919, 1.3919]
+  - [1.409, 1.409, 1.409]
+  - [1.426, 1.426, 1.426]
+  - [1.443, 1.443, 1.443]
+  - [1.46, 1.46, 1.46]
+  - [1.477, 1.477, 1.477]
+  - [1.494, 1.494, 1.494]
+  - [1.5111, 1.5111, 1.5111]
+  - [1.5281, 1.5281, 1.5281]
+  - [1.5451, 1.5451, 1.5451]
+  - [1.5621, 1.5621, 1.5621]
+  - [1.5791, 1.5791, 1.5791]
+  - [1.5961, 1.5961, 1.5961]
+  - [1.6131, 1.6131, 1.6131]
+  - [1.6301, 1.6301, 1.6301]
+  - [1.6471, 1.6471, 1.6471]
+  - [1.6642, 1.6642, 1.6642]
+  - [1.6812, 1.6812, 1.6812]
+  - [1.6982, 1.6982, 1.6982]
+  - [1.7151, 1.7151, 1.7151]
+  - [1.7321, 1.7321, 1.7321]
+  - [1.7491, 1.7491, 1.7491]
+  - [1.7661, 1.7661, 1.7661]
+  - [1.7831, 1.7831, 1.7831]
+  - [1.8001, 1.8001, 1.8001]
+  - [1.817, 1.817, 1.817]
+  - [1.834, 1.834, 1.834]
+  - [1.8509, 1.8509, 1.8509]
+  - [1.8679, 1.8679, 1.8679]
+  - [1.8848, 1.8848, 1.8848]
+  - [1.9017, 1.9017, 1.9017]
+  - [1.9186, 1.9186, 1.9186]
+  - [1.9354, 1.9354, 1.9354]
+  - [1.9523, 1.9523, 1.9523]
+  - [1.9691, 1.9691, 1.9691]
+  - [1.9859, 1.9859, 1.9859]
+  - [2.0027, 2.0027, 2.0027]
+  - [2.0194, 2.0194, 2.0194]
+  - [2.036, 2.036, 2.036]
+  - [2.0527, 2.0527, 2.0527]
+  - [2.0692, 2.0692, 2.0692]
+  - [2.0857, 2.0857, 2.0857]
+  - [2.1022, 2.1022, 2.1022]
+  - [2.1185, 2.1185, 2.1185]
+  - [2.1347, 2.1347, 2.1347]
+  - [2.1509, 2.1509, 2.1509]
+  - [2.1669, 2.1669, 2.1669]
+  - [2.1827, 2.1827, 2.1827]
+  - [2.1984, 2.1984, 2.1984]
+  - [2.2139, 2.2139, 2.2139]
+  - [2.2292, 2.2292, 2.2292]
+  - [2.2443, 2.2443, 2.2443]
+  - [2.2591, 2.2591, 2.2591]
+  - [2.2737, 2.2737, 2.2737]
+  - [2.2879, 2.2879, 2.2879]
+  - [2.3018, 2.3018, 2.3018]
+  - [2.3153, 2.3153, 2.3153]
+  - [2.3284, 2.3284, 2.3284]
+  - [2.3411, 2.3411, 2.3411]
+  - [2.3533, 2.3533, 2.3533]
+  - [2.365, 2.365, 2.365]
+  - [2.3761, 2.3761, 2.3761]
+  - [2.3867, 2.3867, 2.3867]
+  - [2.3968, 2.3968, 2.3968]
+  - [2.4063, 2.4063, 2.4063]
+  - [2.4151, 2.4151, 2.4151]
+  - [2.4234, 2.4234, 2.4234]
+  - [2.4311, 2.4311, 2.4311]
+  - [2.4382, 2.4382, 2.4382]
+  - [2.4447, 2.4447, 2.4447]
+  - [2.4507, 2.4507, 2.4507]
+  - [2.4561, 2.4561, 2.4561]
+  - [2.461, 2.461, 2.461]
+  - [2.4655, 2.4655, 2.4655]
+  - [2.4695, 2.4695, 2.4695]
+  - [2.4731, 2.4731, 2.4731]
+  - [2.4763, 2.4763, 2.4763]
+  - [2.4791, 2.4791, 2.4791]
+  - [2.4817, 2.4817, 2.4817]
+  - [2.4839, 2.4839, 2.4839]
+  - [2.4859, 2.4859, 2.4859]
+  - [2.4877, 2.4877, 2.4877]
+  - [2.4892, 2.4892, 2.4892]
+  - [2.4906, 2.4906, 2.4906]
+  - [2.4918, 2.4918, 2.4918]
+  - [2.4928, 2.4928, 2.4928]
+  - [2.4937, 2.4937, 2.4937]
+  - [2.4945, 2.4945, 2.4945]
+  - [2.4952, 2.4952, 2.4952]
+  - [2.4958, 2.4958, 2.4958]
+  - [2.4964, 2.4964, 2.4964]
+  - [2.4969, 2.4969, 2.4969]
+  - [2.4973, 2.4973, 2.4973]
+  - [2.4976, 2.4976, 2.4976]
+  - [2.4979, 2.4979, 2.4979]
+  - [2.4982, 2.4982, 2.4982]
+  - [2.4984, 2.4984, 2.4984]
+  - [2.4986, 2.4986, 2.4986]
+  - [2.4988, 2.4988, 2.4988]
+  - [2.499, 2.499, 2.499]
+  - [2.4991, 2.4991, 2.4991]
+  - [2.4992, 2.4992, 2.4992]
+  - [2.4993, 2.4993, 2.4993]
+  - [2.4994, 2.4994, 2.4994]
+  - [2.4995, 2.4995, 2.4995]
diff --git a/core/dr-film/src/built_in.rs b/core/dr-film/src/built_in.rs
index d515f2d..b7e00e5 100644
--- a/core/dr-film/src/built_in.rs
+++ b/core/dr-film/src/built_in.rs
@@ -118,4 +118,24 @@ pub static BUILT_IN: &[(&str, &str)] = &[
         include_str!("../profiles/kodak_doublex.yaml"),
     ),
     ("kodak_2302", include_str!("../profiles/kodak_2302.yaml")),
+    (
+        "ilford_pan_f_plus",
+        include_str!("../profiles/ilford_pan_f_plus.yaml"),
+    ),
+    (
+        "ilford_delta_100",
+        include_str!("../profiles/ilford_delta_100.yaml"),
+    ),
+    (
+        "ilford_fp4_plus",
+        include_str!("../profiles/ilford_fp4_plus.yaml"),
+    ),
+    (
+        "ilford_delta_400",
+        include_str!("../profiles/ilford_delta_400.yaml"),
+    ),
+    (
+        "ilford_hp5_plus",
+        include_str!("../profiles/ilford_hp5_plus.yaml"),
+    ),
 ];
diff --git a/core/dr-film/src/grain.rs b/core/dr-film/src/grain.rs
index ead2b63..be33b64 100644
--- a/core/dr-film/src/grain.rs
+++ b/core/dr-film/src/grain.rs
@@ -34,15 +34,35 @@
 //!
 //! # Where crystal habit lives
 //!
-//! In [`crate::profile::Profile::rms_granularity`], the number every datasheet
-//! publishes. It is a measurement of exactly the thing that differs between a
-//! traditional cubic emulsion and a tabular one: for the same speed, tabular
-//! crystals present more area per unit of silver, so fewer, flatter grains
-//! cover the frame and the film reads finer. Ilford Delta 100 is quoted around
-//! 9 where HP5 Plus is around 12, and that gap *is* the crystal habit.
+//! In [`crate::profile::Profile::rms_granularity`]. It measures exactly the
+//! thing that differs between a traditional cubic emulsion and a tabular one:
+//! for the same speed, tabular crystals present more area per unit of silver,
+//! so fewer, flatter grains cover the frame and the film reads finer. A
+//! stock's grain character therefore needs no new model and no new code — it
+//! is one number in the profile.
 //!
-//! So a stock's grain character needs no new model and no new code — it is one
-//! number in the profile, taken from the manufacturer's own measurement.
+//! # Getting that number is the hard part
+//!
+//! It is **not** simply "what the datasheet says", and assuming so is a trap
+//! worth naming:
+//!
+//! - **Kodak colour negatives publish Print Grain Index, not RMS.** PGI is a
+//!   perceptual scale from viewer surveys — 25 is roughly the threshold of
+//!   visibility and four units is one just-noticeable difference — and Kodak
+//!   state it *cannot* be compared to RMS granularity. There is no published
+//!   conversion, so a PGI figure cannot be dropped into this field.
+//! - **Ilford publish no granularity figure at all.** Their technical sheets
+//!   describe grain only in words ("fine grain", "finest grain"); the word
+//!   granularity does not appear in them. Spectral sensitivity and the
+//!   characteristic curves are there, but as graphs.
+//! - RMS granularity proper is published mostly for black-and-white, reversal
+//!   and motion-picture stocks.
+//!
+//! So the shipped defaults are plausible rather than measured, and every stock
+//! currently carries the same ones — which means **grain does not yet tell one
+//! stock from another**. Fixing that is per-stock data, not code, and for the
+//! films whose figures are unpublished it needs a defensible estimate rather
+//! than a number copied off a page.
 
 use crate::profile::Profile;
 
diff --git a/core/dr-film/src/lib.rs b/core/dr-film/src/lib.rs
index 25335ab..d23be23 100644
--- a/core/dr-film/src/lib.rs
+++ b/core/dr-film/src/lib.rs
@@ -126,6 +126,30 @@ mod tests {
                 "{} rendered mid-grey as {mid:?}",
                 film.stock
             );
+
+            // And that it is a *photograph*. Finiteness alone passes for a
+            // stock that renders every frame black or blown, which is the way
+            // a constructed profile fails: the curve parses, bakes, and sits
+            // entirely off one end of its own exposure range.
+            let luma = (mid[0] + mid[1] + mid[2]) / 3.0;
+            assert!(
+                (0.02..0.75).contains(&luma),
+                "{} put mid-grey at {luma:.3}, which is not a rendering of it",
+                film.stock
+            );
+
+            // Monotone, too. A stock that darkens as it is exposed is either
+            // inverted or broken, and either way is not what the picker
+            // offered.
+            let shadow = baked.apply([0.02; 3]);
+            let highlight = baked.apply([0.8; 3]);
+            let rising = highlight[1] > shadow[1];
+            let inverted = film.kind == Kind::Negative && default_print(film).is_none();
+            assert_eq!(
+                rising, !inverted,
+                "{}: shadow {:.3} highlight {:.3} runs the wrong way",
+                film.stock, shadow[1], highlight[1]
+            );
         }
     }
 
diff --git a/tools/film-profiles/convert.py b/tools/film-profiles/convert.py
index d34e2e9..efc2b2a 100644
--- a/tools/film-profiles/convert.py
+++ b/tools/film-profiles/convert.py
@@ -83,6 +83,56 @@ DEV_BRANCH = {"kodak_trix", "kodak_doublex", "kodak_2302"}
 # file and is dropped here only because nothing can yet ask for it.
 DEVELOPMENT_INDEX = 2
 
+# ---------------------------------------------------------------------------
+# Constructed black-and-white stocks.
+# ---------------------------------------------------------------------------
+#
+# **These are not measurements, and the profiles say so.** Ilford publish
+# spectral sensitivity and characteristic curves as *graphs*, and no
+# granularity figure at all -- the word does not appear in their technical
+# information. Nobody has digitised them, so a profile has to be constructed.
+#
+# What each part actually rests on:
+#
+#   speed        Published and exact. ISO 400/27 for HP5 Plus is a fact.
+#   contrast     ISO 6:1993 defines normal development as an average gradient
+#                of 0.62 over 1.30 log-E. A standard, not a guess.
+#   spectral     *Borrowed* from Kodak Double-X, which is a measured
+#                panchromatic negative -- peak near 430nm, the dip at 500, the
+#                cutoff at 660 -- shifted by the speed difference. Conventional
+#                panchromatic sensitisation is much alike across black-and-white
+#                stocks, and this is far better founded than reading pixels off
+#                a printed curve.
+#   silver       Neutral, which is not an approximation: developed silver
+#                absorbs flat across the visible band, and Double-X's measured
+#                density is flat 1.0.
+#   granularity  **Estimated.** Ordered by each film's known relative grain and
+#                nothing more.
+#
+# So these render as an Ilford-*shaped* stock -- right speed, right contrast,
+# right relative grain -- and not as a measurement of one. Anyone who digitises
+# the real curves should replace them outright.
+PARAMETRIC_BW = [
+    # stock, display name, ISO, Dmax, granularity estimate
+    ("ilford_pan_f_plus", "Ilford Pan F Plus", 50, 2.5, 5.0),
+    ("ilford_delta_100", "Ilford Delta 100", 100, 2.4, 6.0),
+    ("ilford_fp4_plus", "Ilford FP4 Plus", 125, 2.5, 7.0),
+    ("ilford_delta_400", "Ilford Delta 400", 400, 2.4, 9.0),
+    ("ilford_hp5_plus", "Ilford HP5 Plus", 400, 2.6, 11.0),
+]
+
+# The stock whose measured panchromatic response the constructed ones borrow.
+BW_REFERENCE = "kodak_doublex"
+BW_REFERENCE_ISO = 250
+
+# ISO 6:1993's normal-development contrast.
+BW_GAMMA = 0.62
+
+# Where mid-grey sits above the speed point, in log exposure. At gamma 0.62
+# this puts an 18% card near 0.68 above fog, which is what a correctly exposed
+# negative reads.
+BW_SPEED_POINT = -1.1
+
 CACHE = pathlib.Path(__file__).parent / "upstream"
 
 
@@ -239,6 +289,100 @@ def convert(stock):
     return "\n".join(out) + "\n"
 
 
+def build_parametric_bw(stock, name, iso, density_max, granularity):
+    """A constructed black-and-white profile. See PARAMETRIC_BW for its basis."""
+    import math
+
+    ref = json.loads((CACHE / f"{BW_REFERENCE}.json").read_text())["data"]
+    wavelengths = ref["wavelengths"]
+    n = len(wavelengths)
+
+    # The measured panchromatic response, moved by the speed difference. A
+    # faster film is more sensitive at every wavelength, which is a shift of
+    # the log curve rather than a change in its shape.
+    speed_shift = math.log10(iso / BW_REFERENCE_ISO)
+    sensitivity = []
+    for row_in in ref["log_sensitivity"]:
+        v = row_in[0]
+        sensitivity.append(None if v is None or v != v else v + speed_shift)
+
+    # Developed silver, which absorbs neutrally. A third each, because the
+    # renderer sums the three layers -- the same reason `split_dye` exists.
+    dye = [[1.0 / 3.0] * 3 for _ in range(n)]
+    base = [0.1] * n
+
+    # A straight line of slope `gamma`, softened into a toe below and a
+    # shoulder above.
+    log_exposure = [-3.0 + 7.0 * i / 255.0 for i in range(256)]
+    toe, shoulder = 0.35, 0.45
+    curves = []
+    for x in log_exposure:
+        d = (
+            BW_GAMMA * toe * math.log10(1 + 10 ** ((x - BW_SPEED_POINT) / toe))
+            - BW_GAMMA
+            * shoulder
+            * math.log10(
+                1 + 10 ** ((x - BW_SPEED_POINT - density_max / BW_GAMMA) / shoulder)
+            )
+        )
+        curves.append([d] * 3)
+
+    g = num(granularity)
+    out = [
+        "# Generated by tools/film-profiles/convert.py.",
+        "#",
+        "# *** CONSTRUCTED, NOT MEASURED. ***",
+        "#",
+        "# Ilford publish this film's spectral sensitivity and characteristic",
+        "# curve as graphs, and no granularity figure at all, so this profile is",
+        "# built rather than extracted. Its speed is the published ISO rating,",
+        "# and its contrast is ISO 6:1993's normal development (average gradient",
+        "# 0.62). Its spectral response is borrowed from Kodak Double-X, a",
+        "# *measured* panchromatic negative, shifted by the speed difference.",
+        "# Its granularity is an estimate, ordered against the other films here.",
+        "#",
+        "# So it renders as a film of this speed and contrast, not as a",
+        "# measurement of this emulsion. Replace it outright if anyone digitises",
+        "# the real curves.",
+        "",
+        "version: 'constructed-1'",
+        "stock: " + stock,
+        "name: '" + name + "'",
+        "kind: negative          # negative | positive",
+        "support: film    # film | paper",
+        "stage: filming        # filming | printing",
+        "monochrome: true",
+        "reference_illuminant: D55",
+        "viewing_illuminant: D50",
+        "",
+        "rms_granularity: [" + g + ", " + g + ", " + g + "]",
+        "",
+        "# log10 spectral sensitivity per layer, 380-780nm at 5nm.",
+        "log_sensitivity:",
+    ]
+    for wl, v in zip(wavelengths, sensitivity):
+        cell = "-9" if v is None else num(v)
+        out.append("  - [" + cell + ", " + cell + ", " + cell + "]   # %.0fnm" % wl)
+
+    out += ["", "# Developed silver: neutral across the band.", "dye_density:"]
+    for wl, triple in zip(wavelengths, dye):
+        out.append("  - " + row(triple) + "   # %.0fnm" % wl)
+
+    out += [
+        "",
+        "# Base plus fog. No orange mask on a black-and-white film.",
+        "base_density: " + row(base),
+        "",
+        "# The characteristic curve, parametric.",
+        "log_exposure_min: " + num(log_exposure[0]),
+        "log_exposure_max: " + num(log_exposure[-1]),
+        "density_curves:",
+    ]
+    for triple in curves:
+        out.append("  - " + row(triple, 5))
+    return "\n".join(out) + "\n"
+
+
 TABLE_HEADER = '''//! Generated by tools/film-profiles/convert.py. Do not edit.
 //!
 //! The fixed colour science: the observer, the illuminants and the spectral
@@ -345,6 +489,11 @@ def main():
         dest.write_text(convert(stock))
         print(f"{dest.relative_to(ROOT)}  {dest.stat().st_size / 1024:.1f} kB")
 
+    for stock, name, iso, dmax, gran in PARAMETRIC_BW:
+        dest = PROFILE_DIR / (stock + ".yaml")
+        dest.write_text(build_parametric_bw(stock, name, iso, dmax, gran))
+        print(f"{dest.relative_to(ROOT)}  {dest.stat().st_size / 1024:.1f} kB  (constructed)")
+
     lic = CACHE / "SPEKTRAFILM_LICENSE.txt"
     if lic.exists():
         (PROFILE_DIR / "LICENSE-PROFILES.txt").write_text(lic.read_text())
@@ -376,7 +525,7 @@ def emit_registry(dest):
         "/// Each stock's id and its YAML, in the order the converter ran.",
         "pub static BUILT_IN: &[(&str, &str)] = &[",
     ]
-    for stock in STOCKS:
+    for stock in STOCKS + [p[0] for p in PARAMETRIC_BW]:
         lines.append(f'    ("{stock}", include_str!("../profiles/{stock}.yaml")),')
     lines.append("];")
     dest.write_text("\n".join(lines) + "\n")