Hi all, I am experiencing color-blotches with my NEX-C3 what I suspect to be caused by the input color profile module. In normal low-ISO well exposed images these are nearly invisible. However when processing raws (Sony ARW format) 1600-12800 iso images show color blotches, particular at the lower intensity values as well as a yellow-green shift. This occurs with the standard color profile. These blotches are very difficult to filter away. Non-local noise on color fails. Bilateral filtering with a large radius on color works, thought the image suffers for it.
However selecting linear RGB as the input color profile resolves this issue. Colors looks flatter as a result, however independent of the white balance and other settings. There are NO color blotches. It seems that somehow the input color profile seems to create a spatial variance in the hue. is there a user-solution to this issue or is this a bug? I suspect the interpolation filter used to estimate the colors at screen pixel positions from sensor pixels values from the input color matrix is a bit unstable. Best, Gert ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
