Originally Posted by Dreamliner
There are only so many settings. I don't know what I'm doing wrong:
Please, please, please tell me what you see wrong. I'd love it if a setting was off and I could make it better.
Again forget the custom curves for now until you get gamma D with the settings you have listed to display a picture without crushing shadow detail. Custom curves won't help if you crush shadow details in Gamma D with dark gamma at +5. Keep gamma D until this is solved.
In the projector, set HDMI to standard instead of auto
In the Samsung, select YCC 4:4:4 instead of auto
Set deep color to on (although that might cause some issues if you don't have a good enough cable as the Samsung displays menus at 60p in UHD).
Others with a Samsung might advise on the settings to use for this player. The Samsung is a poor player...
In the JVC, check that the Info screen displays YUV HDR 12bits when playing an HDR title, and that BT2020 and Gamma D are selected in your user preset.
Once all this is validated, use black clipping/white clipping patterns (SONY UHD Bluray or R. Masciola) to set brightness and contrast properly, i.e. to resolve down to level 68 and up to say 2500nits. There is a link in the first post of the JVC Autocal thread about using bright gamma instead of contrast to set the clipping point, but to start with simply use contrast (raise/lower contrast until you resolve at least up to 1200nits if you test with Deadpool, at least up to 2500nits if you test with a 4000nits title).
If none of this makes sense, ask a more knowledgeable friend or a calibrator to set up your projector for you.
Once your levels are set properly and things work as expected with gamma D, time to set your brightness/contrast to 0 in HDR and move to autocal / custom curves, but I would strongly suggest you leave this to someone else.