Ok for the third attempt, my wife is curious why I'm cursing so much, hang on a minute I have to fetch another beer.
OK I'm calm again but this will be short. I'm back after obtaining GetGrays calibration DVD which includes 100% color patterns for both primaries and secondaries which my DVE DVD does not. I have to add that this is a lovely DVD, very well laid out and all the nagging little wants in the back of my head seem to have been addressed.
Aided by Krasmuziks, what he refers to simple but, very revealing speadsheet which converts xyY data to LCH delta error data I've plotted the color response with filter and without. Essentially the measures plot changes or error in luminance, chroma, and Hugh
, in a manner which is consistent with our perception of the same changes or error from standard from the rec709 standard.
Here it is:
It would appear that utilizing this filter to tame green and blue optically instead of digitally does not trade off color performance for the 22% gain in contrast ratio. I hesistate to announce that the color signature has improved over JVC's intended outcome but relative to the rec709 standard things have improved somewhat with the filter. Both filtered and non-filtered means of calibrated can potentially deliver outstanding color decoder (brightess) and hue performance, the primary penalty of wide color gamut being errors in chroma of color only.
I've also plotted the color signature with color control at -30 and the results are very very interesting, with luck tomorrow I''ll have the means to put my theory to to the test that color saturation can be reduced without color brightness penalties with a little outside help.