Originally Posted by cat6man
my duo has a complete CMS so i was able to adjust x and y for each level from 10% to 100%
i really don't understand how the gamma could be off if the delta-e is under control.................all i can guess is the the Y needs to be adjusted for each level 10%-100% to match the gamma and somehow that got out of wack (i didn't touch Y at all, assuming the program would take care of that automatically since i set 2.2 as my desired gamma in preferences)
My first impression is that you mis-understood the whole process and procedures of calibrating your display. Have you read the following calibration guide:http://www.curtpalme.com/forum/viewtopic.php?t=10457
You adjust grayscale to D65 white point by balancing the RATIO of Red, Green, and Blue in the range of 10% - 100% white, using the settings related to grayscale adjustment (in most devices it is something like R/G/B contrast/gain, R/G/B brightness/offset, etc.) - but it's definitely not CMS, which is used to modify your color gamut.
You calibrate gamma by adjusting the AMOUNT of Red, Green, and Blue (or Y simply put) in the range of 10% - 90%. Before that, you need to set your Contrast (for 100% white) and Brightness (for 0% black) controls correctly.
When you mentioned "... i set 2.2 as my desired gamma in preferences", I assume you're referring to setting the gamma value of 2.2 into the HCFR software - but it doesn't have anything to do with the setting in your Duo. It only tells the HCFR software to calculate the desired gamma curve for you (shown as the white dotted line in the "Luminance" graph). The target Y values for 10% - 90% are also shown in the last row "gamma Y" (the row below "delta xy") in the "Measures" tab. What you need to do is to adjust the gamma setting in the Duo so that the measured Y values for 10% - 90% match the ones shown in the row "gamma Y". I have no experience on your Duo, so I can't tell you which setting in the Duo you need to tweak; but that's the concept of doing the gamma adjustment.
If you understand what I'm saying, you will easily know that your "before" gamma, although not ideal, is much better than your "after" gamma.
Please try to read the above calibration guide if you haven't.