[densh]

Dimming reduces total brightness over time and shifts color balance away from neutral. Latest "Pro" displays from Apple now have built-in support for calibration but only with high end calibration equipment: https://support.apple.com/en-gb/guide/mac-help/mchl628f5edf/...

The implementation is great, since it doesn't add fix up profile on top factory calibration, but actually fully replaces factory calibration internal LUT. It worked wonders to completely fix my M1 MBP screen that got noticeably tinted over time. I don't mind brightness reduction since I almost never use it at more than 200 nits, usually around 100. Nominal 1600 leaves lots of buffer for decay over time.

I've had similar issue my OLED TV with the same fix. Got my LG C1 calibrated as well and it looks fantastic again.

It's a shame there are no iOS or Android phones that support calibration out of the box. Some iPads support subset of pro display calibration software (called fine tune calibration), but still lack full recalibration support.