I have only looked at ChromaPure HCFR which don't seem to work in this way but it seems to me that instead of 10 zones for grayscale, there should be 11. I know HCFR allows you to free measure. I assume ChromPure does as well.
The highest zone woud be to 109%. If RGB was in balance across the zones through 11 with gamma right for zone 10 would you not almost by definition have a correct contrast setting. You would then choose the highest luminance that you were comfortable with that conitnued to allow the grayscale to have RGB balanced and gamma right.
I don't really know, but I suspect with my set is there is a gamma spike at high saturation. Is there a simple way to calculate what the luminance of 109% saturation should be given a target gamma and the known luminance at 100% and the calibration software's indicated gamma at 90%?
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