This is the reason for the black crush in 144 Hz YCbCr422 mode. When the signal is YCbCr, the display probably uses the BT.1886 gamma curve commonly used with Rec.709 video, which is slightly different from the sRGB 2.2 gamma curve commonly used with an RGB signal. Note that 8-bit / 10-bit and RGB / YCbCr have nothing to do with the above. The desktop and non-HDR aware applications will continue to use the 2.2 gamma curve and sRGB colour space resulting in an incorrect image. HDR10 is an absolute standard - there is only one correct gamma (the PQ curve), one correct colour space (BT.2020), and one correct brightness (diffuse white is 100 nits). I suggest getting used to this brightness in SDR because it will look the same as HDR and only highlights will be above 100 nits. The monitor will also restrict the brightness to ~100 nits. Everything will be accurate but limited to the sRGB colour space.
This makes use of the monitor's accurate factory calibration. Some games like Source engine games have a -nogammaramp option which lets Displal圜AL profile loader preserve the calibrated gamma curve, resulting in better shadow detail, but the colours will still be oversaturated since the engine is not colour aware.Ģ) Use sRGB mode and choose the default sRGB ICC profile in Windows. However, virtually every other application including the desktop will be oversaturated since they render in sRGB and the monitor will map it to a wider gamut. This gives you accurate wide gamut colour in colour aware applications like Firefox and Photoshop. This mode must be calibrated with a colorimeter and requires a colour aware workflow.ġ) Use Racing mode with custom RGB values, use Displa圜AL to create a custom ICC profile, and use Displa圜AL Profile Loader to preserve the calibration (gamma curve).
DISPLAYCAL VERSION 4 ICC PROFILES ARE NOT SUPPORTED FULL
"Standard" mode means the monitor uses its full colour gamut and ideally does not transform colour values. Do you guys switch through modes? If not, what mode would you recommend for permanant usage. What mode would you use universally? I really dont like switching back and forth through modes. To PG27UQ owners, the monitor has 6 GameVisual modes, for stuff like FPS,RTS,Scenary, sRGB, etc.
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