Hello, great fan of HDR gaming here, my experience is with True Black HDR 400 monitors.
The in-game HDR calibration is not adequate from modern HDR monitors, where both black and white point is absolute minimum for calibration.
I would recommend the following for adequate HDR experience:
- White Point (With bright image showing result of the slider).
- Black point (With dark image showing result of the slider).
- Brightness slider for fine tuning.
- Contrast slider for fine tuning.
- Alternatively: Game can pull these settings from the Microsoft Calibration that players SHOULD be setting up if they own a HDR monitor.
Diablo 4 is a great example of a good functioning HDR Calibrator with images.
The goal with True Black HDR experience is to achieve a DARK area where you can still see dark details without experiencing grey blobs.
This is a challenge when you also have the "automatic eye brightness adaptation" graphics functionality when the player moving from dark to bright areas.
