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Inconsistent ACES results

PostPosted: Fri Sep 28, 2018 10:07 pm
by Cary Knoop
I took a video levels HLG (with Rec.2020) test clip, converted this clip to V-Log/V-gamut and saved the converted video using data levels.

Comparing the original clip and the converted clip using YRGB Color Managed Science with the proper conversions gave a satisfactory result, however under ACES there was a noticeable shift, predominately in the shadows.

aces-vlog-rec709.jpg
aces-vlog-rec709.jpg (245.57 KiB) Viewed 827 times


aces-hlg-rec709.jpg
aces-hlg-rec709.jpg (246.75 KiB) Viewed 827 times


Unless I made a mistake something does not add up, it could be Resolve or some ACES definitions.

Re: Inconsistent ACES results

PostPosted: Sat Sep 29, 2018 10:37 pm
by Cary Knoop
Since there is no 'official' HLG IDT is there perhaps an issue with scene versus display referred, assuming the inverse RTT+ODT was taken for the IDT?