The library's DNGs carry a Lightroom house look in their embedded XMP
— Blue +58, Aqua +50, Yellow and Purple +23, Highlights -40, Blacks
-20 on most — and that, not the camera profile, is why the same files
look richer in Lightroom. The importer skipped exactly that part: the
HSL panel was on its list of structures it did not translate.
Lightroom's eight HSL bands now map onto the colour mixer, hue,
saturation and luminance each one for one: Aqua to our cyan and Purple
to our violet, the nearest of our twelve bands by hue; chartreuse,
spring, azure and rose are left alone. The figures are a first
translation that lr-fit's measurement against Lightroom's output may
yet scale.
read_embedded finds the XMP packet in a photograph's bytes by its
delimiters and translates it, or answers None for a file whose XMP has
no Camera Raw settings — darktable's sidecars, a camera's own packet.
A test reads the library's _MG_9080.dng when it is present.
dtourolle
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