75% Gray Screen Test (Light Gray) – 1 Hour | Bright Uniformity & Calibration Check | 4K

Описание: A professional 75% gray screen test video (1 Hour) in 4K UHD resolution.
Designed to evaluate bright-level screen uniformity, detect clouding, vignetting, and banding, and analyze panel performance in near-white conditions.

🟤 WHY USE A 75% GRAY SCREEN?

75% gray (light gray) is ideal for identifying brightness inconsistencies that are often hidden on pure white screens.

• Bright Uniformity Test – Detect uneven brightness across the panel
• Clouding & Vignetting – Reveal light bleed and edge darkening
• Banding Test – Check for vertical or horizontal bands
• Panel Quality Check – Evaluate LCD, IPS, VA, Mini-LED, and OLED displays
• Dead / Stuck Pixel Check – Some pixel issues are more visible on light gray

⚙️ TECHNICAL SPECS

• Color: 75% Gray (Light Gray)
• RGB Code: 192, 192, 192
• Hex Code: #C0C0C0
• Resolution: 3840 × 2160 (4K UHD)
• Duration: 1 Hour
• Audio: Silent (No Sound)

📌 INSTRUCTIONS

Clean your screen surface

Switch to full screen mode

Use a dim or dark room

Observe for brightness variation, banding, or clouding

⚠️ DISCLAIMER

This video is a digital test tool. It cannot repair hardware defects, but helps identify display panel issues accurately.

Keywords:
75% gray screen, light gray screen test, bright uniformity test, clouding test, banding test, screen uniformity check, monitor test gray, 1 hour gray screen, 4K display test

#ScreenFixLab #GrayScreen #UniformityTest #CloudingTest #BandingTest #MonitorTest #4K