Reaction time & motion blur

    Two separate checks: your human reaction time to a color change, and a subjective motion smear test. This page does not measure panel gray-to-gray (GtG), MPRT, or input lag.

    Scope

    Manufacturer “1 ms / 4 ms” figures are from standardized oscilloscope-style GtG tests. Your browser cannot replicate that hardware setup — use this page for fun, training, and quick visual checks only.

    Human reaction time

    Click to Start

    Motion Blur Test

    8px

    What to look for: The moving square should have crisp edges. If you see a trail or smearing behind it, your monitor has noticeable motion blur.

    Panel GtG (reference only)

    These are marketing / review lab gray-to-gray figures. They are unrelated to the milliseconds you see in the reaction test above (which includes perception, motor delay, and browser timing).

    ~1 ms

    Fast gaming TN / OLED class (spec)

    ~4 ms

    Fast IPS (spec)

    ~5–8 ms

    Common IPS / some VA (spec)

    ~10–20 ms

    Slower transitions; more smear risk (spec)