Quote:
Originally Posted by NoTechi
What gamma are you using for HDR content? I tested so far a 3D LUT DCI-P3 with power gamma 2.2-2.4 with nice results. Now I tried a 3D LUT with madvr set to output in HDR format and ST2048 and JVC also on ST2048 and Guardians of the Galaxy looked fantastic. But when I looked at Iron Man 1 it was not watchable with it. Might be caused by just recalculating the 3D LUt instead of creating a new one with the JVC on ST2048 and HDR profile.
I was thinking I should go for:
1. A 3DLUT for 709 content with a gamma 2.2 or a bit higher using JVC 2020 profile since the calibration was made in DCI-P3
2. A 3DLUT for DCI-P3/BT2020 with gamma ST2048 using JVC HDR profile (which it would switch to automattically on my 7900)
Does this makes sense? 
NoTechi |
1. A 3D LUT for BT.709 content is still considered the reference.
2. A 3D LUT is used to tone map in PQ using the projector's HDR mode. You would lose HDR -> SDR pixel shader, which I know you like. The 3D LUT could do a fine job, but it is a fixed curve for all videos and not dynamic like pixel shader. A 3D LUT for HDR content is not yet the reference, so choose the option with the best image quality. You could also try multiple 3D LUTs for different video peaks.