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Hello,
The only way to get a decent contrast ratio on my weird monitor is to adjust the brightness and contrast settings on my OSD and from the nvidia control panel.
So I applied those tweaked settings on a ICC profile which is loaded by default.I wanted to do a calibration while using this ICC profile settings but every time to I click on start measure, it immediately unload this profiles.
It is possible to force this software to keep loaded a ICC profile while doing calibration measure ?
Thank’s in advance
You can set gamma “as measured” and skip calibration (linearization) step at all. But this may give good result either for XYZLUT-type profile with enough patch quantity, or even for 1xCurve type when your actual gamma is close to some standard. But your approach is strange at all. There’s no sense to tune vcgt manually to make profile further. Set defaults in NVidia and use DisplayCAL settings to get desired values. For really bad displays some investigation is needed. Don’t use black point correction (but use BP compensation). Check black lightness, if it is more than 0.35cdm for 160cdm WP, try to change signal frequency, sometimes this changes display operating mode.
By calibration, I mean every measuring steep not only the gamma adjustment.
I know it’s strange, I had few monitor before this one (on the same nvidia graphic card) and only this one require to adjust the nvidia panel settings for get a decent picture … (With the defaut nvidia panel settings the picture look horrible before and after calibration)
I know to the only way to fix my issue for this monitor is to force DisplayCal to not unload the ICCprofile during the colorimeter measurement.
Adjusting NVidia panel settings is manupulating vcgt curves and switching between full (0…255) and limited (16…235) signal ranges. DisplayCAL manupulates these curves too, your manual work can’t give you any advantage. I think, you should flash your display settings, switch off all automatics, set formal gamma in display menu to 2.2, set WP by display RGB bars and try for different signal settings. Check your brightness too. Some displays show one color cast at low brighness, another at high brightness, and so on.
