Am 04.02.2013 22:45, schrieb Artur de Sousa Rocha: > 2013/2/4 Richard Levitte <rich...@levitte.org>: > > I'm afraid the "laptop LCD" part might be a clue. Few laptop displays > can deliver the gamut needed. The calibration software tries to > preserve the brightness ratios between different levels. If it cannot > by a large margin it will fail in all kinds of ways. That's why I > moved to an external display for photo processing. >
According to my experience it is possible to have a rough consistency check within dispcalGUI by having a look at the vcgt curves (tools->show curves). In a suitable profile R,G and B curves will deviate from the straigth profile by a few percentage points. If the deviation from the diagonal line is very big or if the three curves deviate a lot from each other, it will very difficult to use such a display profile for color management. Assuming calibration and profiling were OK, then it's probably the LCD that forms the problem. Take into account that all final corrections within X11 need to be done with 8bit integers, which does not give a lot of room for accuracy. Ulrich ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
