Panel & Backlight
Viewing Angle Test
Grey steps and color bars to reveal off-axis color/brightness shift.
How to use
- 1Click Start and sit centered first to set a reference.
- 2Move your head left/right and up/down, and step back.
- 3Watch how much the grey steps wash out and the colors shift — less shift is better.
- 4Press Esc to exit.
FAQ
What's normal?
IPS and OLED hold color and brightness well off-axis. TN panels shift heavily (especially vertically) and VA panels show a contrast/gamma shift and corner glow. Some shift is normal — large shifts mean a narrow viewing cone.
Tips
- Set your reference sitting dead-center first, then move off-axis to compare.
- Heavy shift moving vertically is typical of TN panels; a contrast/gamma shift with corner glow is typical of VA.
Related tests
Dead Pixel TestFull-screen solid colors to find dead, stuck, and bright pixels.Backlight BleedReveal LCD backlight leakage and IPS glow in a dark room.Brightness Uniformity50% gray field and a 9-zone grid to spot uneven backlighting.Blooming TestA bright object on black to judge local-dimming halos.