Aurélien,

> The dtstyle produced includes a tone curve and coefficients for the
> LUT. In my case, the tone curve is almost linear, with small
> (unconsitents) bumps. These bumps appear to come from numerical
> errors and don't make sense, so I disabled the tone curve, but now
> some luma values of the LUT patches are a little off the theoretical
> target. 

I think this is because the Spyder ColorChecker does not have enough
gray gradient in it. I had the same issue, I then switched to a it8
target and I do not have this issue now.
 
-- 
  Pascal Obry /  Magny Les Hameaux (78)

  The best way to travel is by means of imagination

  http://www.obry.net

  gpg --keyserver keys.gnupg.net --recv-key F949BD3B
___________________________________________________________________________
darktable developer mailing list
to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org

Reply via email to