How this test works
Track a repeating moving target and look at the shape and intensity of its trail.
- Prepare the display using the checklist below.
- Select Start test and allow fullscreen mode if your browser asks.
- Use the arrow keys, on-screen controls, or click the pattern to move through the test.
- Exit the runner and save a local observation if useful.
Before you begin
- Use the display's native resolution
- Keep the browser in the foreground
- Test one overdrive setting at a time
What to look for
- Faint copies behind the target
- Bright inverse trails
- Dark smearing during high-contrast motion
Important: Results are visual and depend on refresh rate, motion speed, vision, camera exposure, and monitor settings.
Frequently asked questions
Is all ghosting a defect?
No. All sample-and-hold displays have motion blur, and pixel transitions vary. Severe trails may indicate a poor setting or slow transition.
Can I photograph the result?
A pursuit-camera technique can help comparisons, but an ordinary handheld photo may be misleading.
Why is dark smearing worse?
Some panel technologies have slower transitions between dark shades.