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Ghosting Test
Moving patterns reveal ghosting, overshoot, and inverse ghosting. Spot pixel response problems and tune your monitor's overdrive setting.
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What is ghosting?
Ghosting is a trail behind a moving object on your screen. It happens when pixels take too long to change state, so the previous frame is still partially visible when the next one arrives. Slow LCD panels (especially VA) ghost more than fast IPS or OLED.
Ghosting vs inverse ghosting vs overshoot
- Ghosting: a faded trail behind the object. Pixels too slow.
- Inverse ghosting / overshoot: a bright or colored halo in front of or behind the object. Caused by monitor overdrive pushing pixels past their target.
- Corona: a visible edge artifact when overdrive is set too aggressively.
How to fix ghosting
- Open your monitor OSD and find Overdrive / Response Time / AMA / TraceFree.
- Set it to the medium or "Normal" setting first.
- Run this ghosting test with a fast-moving pattern.
- If you see trails - raise overdrive one step.
- If you see bright halos (inverse ghosting) - lower overdrive one step.
- The sweet spot is typically one notch below the maximum setting.
Combine this with our Motion Blur Test, Response Time Test, and read GtG vs MPRT for a full picture of monitor motion clarity.