Motion Blur Test

Motion blur is the visual softening, smearing, or loss of fine detail that occurs when an object moves across your display. On modern flat-panel displays, perceived motion blur is primarily caused by sample-and-hold eye tracking, where your eyes continuously track moving imagery across a display that holds static frames until the next refresh.

Perceived motion blur is caused by two distinct physical phenomena: 1) Eye-tracking sample-and-hold persistence (the image stays frozen for 16.7ms at 60Hz or 6.9ms at 144Hz while your retina sweeps across it), and 2) Liquid Crystal (LCD) pixel transition times (the speed at which subpixels change from one color to another, known as GtG).

No. Motion blur is a general blurring of the moving object across its entire shape, dominated by display frame persistence (MPRT). Ghosting, by contrast, is a distinct secondary trail or shadow trailing behind the moving object, caused specifically by slow liquid crystal transitions (GtG response time).

Yes! Because each frame is displayed for a significantly shorter duration (e.g., 6.9ms at 144Hz vs 16.7ms at 60Hz), eye-tracking blur is cut by more than half, resulting in dramatically crisper moving text and game objects.

Yes. At 144Hz, each frame persists on screen for only 6.94ms compared to 16.67ms at 60Hz. This 58% reduction in frame duration directly cuts eye-tracking persistence blur in half.

Yes. At 240Hz, the frame persistence duration drops to just 4.17ms. Fast-moving objects appear with exceptional sharpness, allowing gamers to read text and track high-speed targets with near zero visual smear.

MPRT stands for Moving Picture Response Time. It measures how long an image remains continuously visible on the human retina before transitioning. Unlike GtG (which measures raw crystal transition), MPRT directly reflects the amount of perceived eye-tracking motion blur.

GtG (Gray-to-Gray) response time measures the time required for a physical pixel to shift from one luminance level to another. Slow GtG causes ghosting and trailing, while fast GtG ensures sharp edge transitions.

Overdrive applies higher electrical voltage to liquid crystals to accelerate their transition speeds, reducing GtG trailing. However, excessive overdrive can produce inverse ghosting (coronas or bright pixel halos).

Text contains fine high-frequency lines and glyph details. When moving across a sample-and-hold display, your eyes sweep smoothly across the pixels, blurring the sharp character strokes on your retina.

If your eyes fixate on a static point on screen rather than tracking the moving object, sample-and-hold blur disappears and is replaced by stroboscopic stepping (phantom arrays).

No. A browser's JavaScript environment has access only to internal render timestamps, not to the optical emission of your physical monitor or the photoreceptors of your eyes. This tool provides deterministic motion patterns so you can visually assess clarity.

No. Measuring true hardware MPRT requires specialized high-speed photodiode oscilloscopes or pursuit camera rigs that physically track along with the moving pixels.

Yes. Although OLED pixels have near-instantaneous GtG response times (<0.1ms), OLED displays still operate on a sample-and-hold principle. A 60Hz OLED still exhibits 16.7ms of persistence blur unless black frame insertion (BFI) is enabled.

Yes. Modern Fast-IPS displays achieve 1ms–3ms GtG with well-tuned overdrive, but still experience persistence blur proportional to their refresh rate (e.g. 6.9ms at 144Hz).

VA (Vertical Alignment) panels frequently suffer from dark-level smearing, where transitions from black or deep gray to lighter colors take significantly longer (15ms–30ms), producing prominent dark trails behind moving objects.