3% Gray Screen Test (1 Hour) | OLED Banding, Dirty Screen Effect & Panel Uniformity Check | 4K

This 3% Gray Screen Test (1 Hour) helps reveal OLED banding, dirty screen effect (DSE), panel tinting and brightness inconsistencies that are often invisible during normal video playback. The 3% gray level is commonly used by display engineers to inspect OLED TVs, gaming monitors and premium displays for vertical banding and near-black uniformity issues. ━━━━━━━━━━━━━━━━━━━━ WHAT THIS TEST REVEALS • OLED vertical banding • Dirty Screen Effect (DSE) • Panel tinting (pink / green shift) • Brightness inconsistencies • Near-black uniformity problems • Mura patterns • Shadow detail issues ━━━━━━━━━━━━━━━━━━━━ HOW TO USE THIS TEST 1. Play the video in full screen. 2. Use a dark room for best results. 3. Look for vertical lines, darker patches or uneven gray. 4. Move closer to inspect the panel carefully. ━━━━━━━━━━━━━━━━━━━━ VIDEO SPECS Resolution: 4K UHD (3840×2160) Color Level: 3% Gray Duration: 1 Hour Frame Rate: 60 FPS Audio: Silent More display tests on ScreenFixLab. #graytest #oledbanding #dirtyscreeneffect #screenfixlab