Originally Posted by desertdome
CMD (Clear Motion Drive) is frame interpolation and doesn't change the original frames. Are you measuring the luminance change or just seeing it visually?
Sorry for late response. I've been tone and sat mapping a new and brighter GammaD curve (with full PT,DL,BL controls) to 30 4K UHD/HDR blu ray movies. HDR is alive and well on RS600. News on that soon.
CMD has a side effect of increasing the luminance at very low luminance levels as can be "visually" seen when using Masciola's HDR Low Color (near Blk) Clipping Pattern. These low color clip patterns are located in Basic Patterns at the bottom. If there is a lot of light at 0% to 5% to start with, then one will not see the effect. One sees the effect of CMD when first, one cannot see any RGB colors at 0% to 4% with masciola's low color clip pattern, then turn on CMD and the RGB patterns will appear. I use an Alens with Zoom at around 80%, with 16ft throw, 11ft view, FireHawk Screen (Gain1.1), 104" Width for 2.35 movies, 120"dia (16:9 scrn), blk velvet environment. Your results may vary.
I turn on CMD=LOWorHIGH on all HDR calibrations ... just in case I run into this situation. It significantly expands the color space at luminance level 5%. The blk clip point should always be set with masciola's low color clip pattern, not the Blk clip pattern. Its the only way to set the White, Red, Green and Blue channels for DL properly (yes, all 4 need to be set properly to increase the color space at low luminance levels ... which is needed to see color in image detail at low luminance levels). Note: GammaD(Picture Tone, Dark Level, Bright Level).
For instance, my new custom GammaD Bright curve (which is unique ... so you cannot use these values ... but you get the idea) has a sweet spot at GammaD(Wht(8,3,5)). I set DL to the following RGB values to visually see an even distribution of RGB channels
using Masciola's Low Color Clip Patterns while keeping Y0% close to 0.005nits. Keep Grn DL values lower because it's way too bright of a color at low luminance levels and, if too high ... even by 1 click, will force Y0% to greatly exceed 0.005nits.:
Yes, one can set White DL and Red, Grn and Blu at the same time ... the effect is cumulative ... RGB is used for low luminance balance (the red, grn and blu chls line up visually using masciola's low color clip pattern ... usually grn lags red and blu a little in my set up).