How to run this test
Use realistic conditions
Dim the room, remove direct reflections, and set the panel to the brightness you normally use. Turn off dynamic local dimming only if you want to compare both states.
Open the black pattern
Enter full screen and wait a few seconds for your eyes to adapt. Look at edges and corners without staring at one bright control element.
Change your position
Move slightly left, right, closer, and farther away. Glow that changes strongly with position is more likely viewing-angle-related IPS glow.
Compare real content
A test pattern is intentionally demanding. Check a dark movie or game from your normal seat before deciding whether the variation is practically distracting.
How to interpret what you see
Fixed edge patch
A bright shape that remains in the same location as you move may be light leakage or pressure-related nonuniformity.
Angle-dependent glow
A corner glow that changes with distance and viewing angle is commonly associated with IPS viewing behavior.
Reflection or camera effect
A patch that changes with room lights or appears mainly in a brightened phone photo may not reflect what you see in normal use.
Judge severity in normal use
A perfect black field in a dark room is a stress condition. The relevant question is whether fixed bright patches distract you in ordinary dark content at your normal brightness and seat. If they do, use the same setup for repeatable photos and note the exact settings.
ScreenVitals provides a controlled visual aid. Results depend on your panel, brightness, viewing angle, room lighting, browser, and—when photos are used—camera exposure. It does not replace manufacturer testing or calibrated measurement equipment.