Thank you Steve for the response.
The objective of the exercise is to determine how the Atomos Ninja works as a LUT holder with HDMI passthrough.
With SDR video scale was quite accurate when verifying a LUT.
HDR is a bit of a mess. I realize that there are a number of other issues, particularly the fact that I am using a JVC X790 projector, which I know is not as linear as one would like.
However, before I explore the other issues and the best way to optimize the PJ for home theatre use, I am trying to understand what is going on with the video scale issue and the Ninja.
PJ was initially profiled 17^3 with Colour Profile off, high bright with peak white adjusted close to 0.3127 0.3290 and 2.6 gamma.
Custom ST2084 rec2020 colour space was created with 5x 2390 static tone map for 67Nit peak and 1000 nits mastering.
LUTs were created using Map Space, Fit Space and Concatenation. All with similar results. I used the concatenated LUTs for this series of tests. Videoscale was applied to the final concatenated LUT.
Verification profiling was grey and primary ramp only for now. I verified the LUT in CS with no Video Scaling through a Unity LUT in the Ninja. I then verified LUTs in the Ninja with and without videoscaling. I am seeing, what I believe are, strange results with the Ninja.
I wanted to attach reports but CS is not responding when it tries to calculate gamut coverage. I let it go for 2 hours and no response.
I have attached 3 profiles:
Concat verif in CS NoScale
Concat verif Ninja VideoScale
Concat verif Ninja NoScale
Any help, ideas or thoughts would be greatly appreciated.https://www.lightillusion.com/forums/shared_files/storage/Profiles/3mverificationbprofiles.zip