What does "white clipping" mean?

White clipping occurs when contrast is pushed too high, causing near-white highlight details (like clouds or snow) to flatten into solid pure white.

Should I test display brightness in a dark or bright room?

For critical black-level shadow testing, evaluate in the actual ambient lighting conditions where you normally work or game.

Brightness & Contrast Test: Dynamic Range and Clipping Check

Verify your display dynamic range: inspect near-black levels (levels 1-20) and near-white highlight steps (levels 235-255) to prevent crushed shadows or blown-out whites.

Calibration Pattern

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What to Look For During This Test

Black Level Shadow Detail (Levels 1-20)

In a dimly lit room, the darkest squares (levels 1 through 5) should be subtly distinguishable from the pure black background.

White Level Highlight Saturation (Levels 235-254)

In photo and video editing, level 254 must remain visibly distinct from level 255 pure reference white.

Color Tint in Grayscale

Neutral gray boxes should not drift into green, magenta, or blue casts at varying luminance steps.

In-Depth Engineering Reference

Want the full diagnosis and warranty recovery guide?

Understand manufacturer pixel fault tolerances (ISO 13406-2), how to tell surface dust from broken pixels, and retailer return timelines.

Testing Questions & Answers

Your display is crushing shadow blacks. Slightly increase the "Brightness" setting on your monitor OSD or check that your GPU HDMI RGB output is set to "Full (0-255)" instead of "Limited (16-235)".