In message <[email protected]> on Sun, 03 Feb 2013 10:02:41 +0100, Ulrich Pegelow <[email protected]> said:
ulrich.pegelow> That said: changing this behavior would mean a significant change in ulrich.pegelow> darktables workflow. In fact we would need to do all processing after ulrich.pegelow> leaving Lab in some abstract color space (e.g. AdobeRGB) and only ulrich.pegelow> convert to monitor color space as a very last step - which would be one ulrich.pegelow> conversion step in addition. I'm not sure I get why moving colorout to be the last step in the pipe would change things so dramatically. The real difference would be where you pick up the histogram data... ulrich.pegelow> I understand that our current way of processing might be surprising at ulrich.pegelow> first sight if you come from another software. However, besides of that ulrich.pegelow> surprise I do not get the point why it would be crucial to have this ulrich.pegelow> changed. Well, to be honest, my first surprise came when I had calibrated my screen. The images turned out awful when developing, and looking at the histogram, the green channel would start about 1/25 in from the left in the histogram, which seemed plainly wrong. It turns out that when I changed the display profile from "system display profile" to something like sRGB, things looked much better (and the histogram changed). My guess is that somehow, when the display profile is set to "system display profile", it gets hold of the Video LUT and applies that to the image, and the result in front of my eyes is my image with said Video LUT doubly applied (since it's also applied later on, beyond the reaches of darktable). Is my guess correct? The more I'm thinking about this, the more I wonder what's the purpose of the display profile... I'm thinking I really want to see what I'll get as output (output profile applied) or print (softproof profile applied?). My logic says that I should probably always have the display profile be the same as the output profile (since I can see the image with softproof profile applied by press S in development mode). Is there any reason I should have the display profile set to something other than the output profile? Cheers, Richard -- Richard Levitte [email protected] http://richard.levitte.org/ "Life is a tremendous celebration - and I'm invited!" -- from a friend's blog, translated from Swedish ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_jan _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
