Originally Posted by HappyFunBoater
You're right. The ADV-HD disk has 0, 25, 50, 75 and 100%. I had previously only used 100% and had just assumed that it would have steps of 10% just like greyscale. Nonetheless, everything worked just fine. The greyscale at 75% was the closest to perfect, so I used that as the input to AccuPel to come up with new Y values for RGB, and new xyY values for CYM. I was suprised to see that the default Color and Tint just happened to be the right settings to dial-in the AccuPel values.
Thanks for your help.
Be careful to avoid confusion. On the AVSHD disk (at least the AVCHD version I use), where you see 0%, 25%, 50%, 75%, 100%, those are saturation values, all at 100% luminance. In other words, they are intended to give you a line of points from white out to, say, red, including points 25%, 50%, 75% of the way. They will measure different xy values. These can be used in HCFR for its less used saturation-luminance and saturation-error graphs.
What I was talking about was 100% saturated red, measured at 75% luminance, just like a 75% point on the grayscale. As I recall, the AVSHD disk offers 75% colors, and 100% colors, in windows and full fields. For a particular color, comparing the two give the same xy coordinates, or roughly the same depending on grayscale and how the set works, but a different Y.
If you got the right results, I expect you were using the right patterns. I just worry, where you wrote 0%, 25%, 50%, 75%, 100%, you may have been looking at something else.