Ghosting Test
Inspect monitor trails and overshoot around original moving block edges.
Start and follow the blocks with your eyes. Compare edges on each background for dark trails or bright halos; pause before changing monitor settings.
Ready — motion is paused
Motion wraps at the edge. Compare the center of each pass; wrapping is not a panel trail.
How to use this test
- Start the moving blocks and follow their edges near the center of each pass.
- Compare backgrounds and speeds deliberately, keeping settings consistent between observations.
- Pause before changing documented monitor settings. Resume after an interruption; Reset restores the default paused pattern.
Want to compare this with timing, colors, and motion in one session? Run the Complete Monitor Test.
What to look for
Follow the moving blocks with your eyes and inspect the contrasting edges near the center of each pass. Dark or colored trails may relate to pixel transitions; bright halos can be consistent with overdrive overshoot, sometimes called inverse ghosting. Compare the same speed, direction, and background before and after a display setting change, following your monitor’s instructions.
Know the limitations
This is a visual diagnostic, not an objective response-time measurement in milliseconds. Panel response, overdrive settings, refresh rate, browser rendering/load, camera capture, and your eye tracking/perception all influence the appearance. Wrapping at the edge is part of the pattern. A long scheduling interruption pauses the test; resume explicitly rather than judge interrupted movement.
If a trail changes between runs
Record speed, background, configured refresh mode, and any overdrive setting. Change one setting at a time and follow the display manual. A scheduling interruption or the edge-wrap jump can confuse comparison; resume clean motion before interpreting an edge. The page cannot derive a response-time value.
Common questions
Does a bright trail prove inverse ghosting?
No. A bright halo can be consistent with overshoot, but browser timing, capture, and perception can also affect it. Compare a repeatable pattern and your display’s documented settings before drawing conclusions.
Can this measure a monitor’s response time?
No. It lets you observe moving edges. A certified response-time measurement needs suitable instrumentation and a defined methodology; browser animation alone cannot provide it.