Originally Posted by fafrd
From another thread, I think I might have figured out the answer to my own question - I have been using the 'HDTV - Rec 709' Color Space Standard for my calibrations, but I now see that there is also a 'HDTV - Rec 709 (75%/75%)' option as well.
Is using this 75%/75% Standard and the 75% Saturation 75% Amplitude Primary / Secondary Sweep off of GCD the way to calibrate to 75% Saturation levels rather than 100% Saturation levels? And if done this way, does that then mean that 25%, 50%, and 75% Saturation levels are likely to be more accurate and 100% Saturation levels end up wherever they end up? Is that the technique recommended to calibrate the Vizio P60/P70?
So I tried calibrating to HDTV - Rec 709 (75%/75%) and I think the results are improved (attached). The only think I am confused about is that I could not use the CMS color controls at all (they had no effect) - only adjustments I could make were through master 'Color' and 'Tint' - is that normal?
All dEs below 2.8 - here is a recap:
Greyscale: all dEs at 0.3 or less
Primaries and Secondaries: Blue dE of 2.2, Red dE of 2.1, all others 1.9 or less
Red Saturation Sweep: 75% dE of 2.7, all others 2.2 or less
Green Saturation Sweep: 25% dE of 1.1, all others 1.0 or less (big improvement
Blue Saturation Sweep:100% dE of 2.2, all others 1.6 or less (big improvement
Yellow Saturation Sweep:75% dE of 1.8, all others 1.6 or less
Cyan Saturation Sweep:100% dE of 1.2, all others 0.6 or less
Magenta Saturation Sweep:100% dE of 2.0, all others 1.4 or less
Color Checker: Magenta dE 1.9, all others 1.8 or less (big improvement
Would appreciate feedback as to whether CMS controls are supposed to be ineffective when using HDTV - 709 (75%/75%) as well as whether there is anything further that can be done to improve this calibration.