On Jan 30, 2008 9:38 PM, Leonard Evens <len@xxxxxxxxxxxxxxxxxxxxx> wrote: > > You shouldn't be using xgamma. You want to load the vgct tag in your > monitor profile using either dispwin or xcalib. If you look at the > argyll archives you will find an explanation of the difference between > xgamma and the others. You will also find a discussion I initiated > about what the point of loading the vgct tag is and what else a color > managed application like gimp 2.4 does with the profile. I was rather > confused about the matter, and a couple of kindly souls set me straight. I think this should be that thread: //www.freelists.org/archives/argyllcms/01-2008/msg00281.html > > > As my > > monitor is connected via DVI digital I only have backlight control on > > the monitor. I adjusted the gamma until dispcal would tell me that it > > measures a gamma of about 2.2 (using "dispcal -yl -r"). After this I > > ran the profiling step (option 6 when running "dispcal -v2 -yl -o > > Samsung191T"). > > I have a Samsung 226CW. You should read very carefully what the argyll > documentation says about profiling LCD monitors. Lars has addressed > this issue in his answer and you would do well to take his advice. Well, the only thing I can change is the backlight. All other options are locked as I use a DVI digital connection between computer and monitor. (Contrast shows 50% and does not allow change.) The funny thing with xgamma is that it does not affect my display, whereas fglrx_xgamma, the tool from ATI, does affect the display. I don't understand the relation between xgamma and video card lut yet. I have to do some more reading and searching about this first. Thanks for the feedback and pointers! Regards, Luud