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