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Test de Temps de Réponse des Pixels

Testez le temps de réponse des pixels avec des transitions rapides noir-blanc. Détectez le ghosting. Outil gratuit.

Test de Temps de Réponse des Pixels
Testez le temps de réponse des pixels avec des transitions rapides noir-blanc. Détectez le ghosting. Outil gratuit.
ESC exit_fullscreen
Flashes black/white at 100ms intervals
Detects ghosting and motion blur
Best viewed in a dark room

Qu'est-ce que le Temps de Réponse des Pixels ?

Mesure la vitesse à laquelle les pixels changent d'état (ms). Une réponse lente cause du ghosting.

Comparaison des Panneaux

Why Should You Run This Test?

If you see ghosting, motion blur, or trailing shadows behind fast-moving objects in games or videos, your monitor's pixel response time may be too slow. This test rapidly flashes between black and white so you can observe how quickly your pixels transition.

Common Symptoms

  • Ghost trails behind moving text when scrolling web pages
  • Motion blur during fast-paced games (FPS, racing)
  • Smearing or "black smear" in dark scenes (common on VA panels)
  • Mouse cursor leaves a visible trail when moved quickly

What Causes Slow Pixel Response?

Panel Technology

  • VA panels (8-15ms) — VA panels have the slowest response, especially in dark-to-light transitions. "Black smear" is a known VA issue where dark pixels trail noticeably.
  • IPS panels (4-5ms) — Good balance between response time and color accuracy. Some affordable IPS monitors have slower transitions.
  • TN panels (1-2ms) — Fastest LCD response time but worst viewing angles and colors.
  • OLED (0.1ms) — Near-instant response with no ghosting, but susceptible to burn-in.

Other Factors

  • Overdrive set too high — Monitor overdrive/response time settings that are too aggressive cause "inverse ghosting" (bright corona artifacts).
  • Low refresh rate — 60Hz shows more perceived blur than 144Hz even with the same response time.
  • VSync or frame buffering — These add input lag that can feel like slow response.

How to Read Your Results

✅ Clean, instant transitions — no trails — Your monitor has fast pixel response. Suitable for gaming and fast content. You should see sharp black and white flashes with no ghost images between them.

⚠️ Slight gray shadows during transitions — Your monitor has moderate response time. You may notice ghosting in fast games. Try adjusting your monitor's overdrive/response time setting (usually in the OSD menu).

❌ Visible smearing or bright halos between transitions — Your monitor has slow response (likely VA panel) or overdrive is set incorrectly. If you see bright "corona" artifacts, your overdrive is too aggressive — turn it down.

How to Reduce Ghosting

  • Adjust monitor overdrive — Most gaming monitors have an "Overdrive" or "Response Time" setting in the OSD (Off/Low/Medium/High). Start at Medium — too high causes inverse ghosting.
  • Increase refresh rate — If your monitor supports 120Hz/144Hz, enable it in Display Settings. Higher refresh rate reduces perceived motion blur.
  • Enable motion blur reduction — Some monitors have backlight strobing features (ULMB, ELMB, DyAc) that reduce perceived motion blur at the cost of brightness.
  • Disable frame buffering — Turn off VSync, triple buffering, or other frame smoothing that adds latency.
  • Consider panel upgrade — If ghosting is severe and persistent, your panel type (VA) may be the limitation. IPS or OLED panels offer faster transitions.

reference_results

✅ Good Result — Clean Transitions

You should see sharp, instant flashes between pure black and pure white with no visible gray "in-between" frames. Each flash is crisp and distinct — like a strobe light. No trails, smears, or ghost images between transitions.

⚠️ Moderate Ghosting

During transitions, you can see a brief gray or shadow frame — the previous state lingers for a moment before fully transitioning. This is most noticeable in the black-to-white direction and indicates moderate pixel response time (5-10ms).

❌ Severe Ghosting or Inverse Ghosting

Transitions show visible smearing — the screen appears to "swipe" between states rather than instantly switching. Alternatively, you may see bright white halos or corona around the edges during transitions, which indicates overdrive is set too high (inverse ghosting).

Questions Fréquentes – Test de Temps de Réponse des Pixels

Une traînée floue derrière les objets en mouvement causée par des transitions lentes de pixels.

5ms pour usage général, 1-4ms pour le gaming, 0,1ms pour OLED.

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Quick Screen Health Check

How did your screen perform?

How did the black/white transitions look?