Uniformity correction

Uniformity correction compensates for differences in brightness or color across a screen. Its aim is a more even image. A flat gray image should look more alike at the center and edges. Different displays use different correction methods. EIZO describes one example for its monitors. EIZO’s uniformity correction

BetterDisplay provides Uniformity Correction for built-in displays on Apple silicon. It appears in Color Mode when the display system reports the control. The switch asks the system to enable or disable its correction. It does not measure the panel or create a new calibration, and the display system supplies the correction algorithm.

This is separate from dithering, which represents intermediate tones, or choosing a color profile. See Software XDR/HDR Upscaling and Dimming for the related brightness settings.