Скачать или смотреть Sharpness & Overscan Test 📏 (1 Hour) | Fix Zoomed-In TV & White Halos | 4K

Is your TV or monitor cutting off the edges of your screen?
Do text and objects look too sharp, with ugly white halos or outlines?

This professional Sharpness & Overscan Test Pattern helps you fix both problems in minutes.

📏 WHAT IS OVERSCAN?
Many TVs are shipped with Overscan enabled by default.
This zooms the image in by ~5%, cutting off the taskbar, subtitles, and screen edges — and ruining 1:1 pixel accuracy.

🔪 WHAT IS ARTIFICIAL SHARPNESS?
High Sharpness settings add fake white outlines (ringing artifacts) around objects to make the picture look "crisper."
In reality, this destroys fine detail and makes text look dirty and harsh.

🧪 HOW TO USE THIS TEST
1. Play this video in 4K (fullscreen).
2. OVERSCAN CHECK:
Look at the red arrows in the corners.
👉 If their tips are cut off, your TV is zooming the image.
Set Aspect Ratio to:
"Just Scan", "Fit to Screen", "Original", or "1:1 Pixel Mapping".

3. SHARPNESS CHECK:
Look at the black lines and circles in the center.
👉 If you see glowing white halos around them, your Sharpness is too high.
Lower Sharpness (usually to 0–10%) until halos disappear.

⚙️ SCREENFIX LAB – TECH SPECS
• True 1:1 Pixel Mapping Grid
• Moiré & Edge Artifact Detection
• Moving Scan Bar (prevents OLED dimming)
• Resolution: 3840 × 2160 (4K UHD)
• Duration: 1 Hour Loop

Perfect for:
✔ New TVs
✔ Gaming monitors
✔ PC-to-TV connections
✔ Console setup
✔ Fixing blurry text and cut-off edges

Subscribe for more professional display test patterns.

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