Hi,

I have *jpg* files (not post-processed by me) for which I suspect a problem
with icc profile (not because of darktable, but darktable seems to reveal
the problem) :


   - When I open them in the darkroom, there is less contrast and
   saturation than in the original full-screen lighttable thumbnail.
   - If in the "input color profile" module I change from "embedded ICC
   profile" to "Adobe RGB", the contrast and color are the same as the initial
   thumbnail in the lighttable.
   - If I modify the image (like change back to "embedded ICC") and go back
   to lighttable, the thumbnail is now like in the darkroom (little
   contrast/saturation).


The embedded ICC profile is sRGB. I suspect that the embedded ICC profile
is wrong and should have been AdobeRGB (this behavior in darktable appears
only for images post-processed by Capture NX-D, not images from camera sent
by the same person).

What I don't understand, though, is why the first thumbnail in lightable
was different (like with an AdobeRGB profile).
I have read 2.2.3.1. Thumbnail creation
<http://www.darktable.org/usermanual/ch02s02s03.html.php> and color manage
cached thumbnails <http://www.darktable.org/usermanual/ch08s02.html.php> (it
is on), but I still does not understand this case. I use darktable 2.2.5.

If someone has an explanation...

Thank you,
Émile

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