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Show AI denoise in the manual on sharp, noisy frames

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The ISO 8000 Brooklyn Bridge frame was soft at 1:1 before any denoising,
so it could not show that Best keeps detail. The section now shows five
sharp frames from ISO 4000 to 16000, each at 1:1 where hard edges meet
flat areas, Bilinear beside Best: a subway poster, a cathedral portal, a
circus clock, a clinic sign and graffiti. Fast is described, not shown.

at_develop opens a DNG when the name carries its extension. The scene
now fails when Best never lands instead of capturing the undenoised
frame twice.
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dtourolle
2026-10-08 22:22:40 -04:00
parent fc3b1ca440
commit f813014e80
16 changed files with 98 additions and 56 deletions
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@@ -236,13 +236,18 @@ already used is quick.
`Strength` eases it off: below 100 % it puts back some of what was removed,
as grain without colour, for a picture that does not look too smooth.
The lamp and railing of a night frame at ISO 8000, at 1:1, by each method:
Five sharp photographs at high ISO, each at 1:1 where hard edges meet
flat areas, as the camera's ordinary conversion gives them and as `Best`
develops them. The grain goes from the flat paper, stone, canvas and paint; the
lines, the lettering and the carving keep their edges:
| Bilinear | Fast |
|---|---|
| ![The railing and the lamp at ISO 8000, as the camera recorded them](media/develop-denoise-bilinear.png) | ![The same, with the Fast network](media/develop-denoise-fast.png) |
| **Best** | |
| ![The same, with the Best network](media/develop-denoise-best.png) | |
| | Bilinear | Best |
|---|---|---|
| ISO 4000 | ![A subway poster's masthead at ISO 4000, at 1:1, as the camera recorded it](media/develop-denoise-poster-bilinear.png) | ![The same with Best](media/develop-denoise-poster-best.png) |
| ISO 8000 | ![The carving round a cathedral door at ISO 8000, at 1:1, as the camera recorded it](media/develop-denoise-portal-bilinear.png) | ![The same with Best](media/develop-denoise-portal-best.png) |
| ISO 12800 | ![A clock's numerals over a circus ring at ISO 12800, at 1:1, as the camera recorded it](media/develop-denoise-clock-bilinear.png) | ![The same with Best](media/develop-denoise-clock-best.png) |
| ISO 16000 | ![Lettering on a white panel at ISO 16000, at 1:1, as the camera recorded it](media/develop-denoise-sign-bilinear.png) | ![The same with Best](media/develop-denoise-sign-best.png) |
| ISO 16000 | ![Graffiti on a white wall at ISO 16000, at 1:1, as the camera recorded it](media/develop-denoise-graffiti-bilinear.png) | ![The same with Best](media/develop-denoise-graffiti-best.png) |
It works on raw files from any camera with the usual colour pattern of
red, green and blue squares — not on JPEGs, and not yet on Fujifilm's