Motion Blur Test

Introduction

The DeviceHub Motion Blur Test is a free online visual judgment tool that shows moving patterns so you can assess how clear or smeared motion looks on your monitor, without claiming to be a pursuit-camera laboratory. Esports players tuning overdrive, office workers bothered by scrolling blur, TV shoppers comparing sample-and-hold panels, and laptop reviewers checking “feel” after a refresh-rate change use pursuit-friendly markers and gratings in the browser. Open the page fullscreen, track the motion with your eyes, and decide whether detail stays readable. DeviceHub does not ship a hardware photo-sensor array; clarity is your visual judgment, influenced by panel type, Hz, PWM, overdrive, and the browser’s frame pacing. Pair with Refresh Rate and Frame Skip Tests when you need timing context, remembering those are rAF estimates rather than lab analyzers. Use Contrast and Color Tests when static image quality is the real complaint. Perceived motion clarity is where panel technology, refresh rate, overdrive tuning, and eye pursuit collide, and where marketing “1 ms” claims rarely match what your eyes report while tracking a strafing target. DeviceHub’s Motion Blur Test shows moving patterns so you can visually judge smear versus sharpness on your monitor without claiming to be a pursuit-camera laboratory measuring MPRT with instrumentation. Esports players stepping overdrive carefully, office workers bothered by scrolling text mush, TV shoppers comparing sample-and-hold panels, and laptop owners checking “feel” after an Hz bump use pursuit-friendly markers in the browser as a quick reality check. Clarity here is your visual judgment, shaped by panel type, PWM interactions, overdrive ghosts, and the browser’s own frame pacing, another reason to keep Refresh Rate and Frame Skip Tests nearby as rAF-based timing companions, not as lab analyzers. Stop immediately if patterns cause discomfort, and do not graduate to Screen Flicker Test’s intentional flashes without reading its photosensitivity and epilepsy warnings. Static image complaints belong on Contrast and Color Tests instead of forcing motion patterns when the real issue is milky blacks or a green cast. Because the page needs no privileged permissions, you can A/B two monitors on a locked work PC by moving the window and repeating the same pursuit. Tournament loaner monitors benefit from a thirty-second pursuit pass after someone else changed overdrive overnight, because inverse ghosting can look like a “sharp” setting until you actually track a moving marker. DeviceHub keeps the language experiential on purpose so nobody mistakes a browser pattern for a pursuit-camera MPRT certificate.

What this tool does

Animated patterns move at controlled speeds while copy explains how to pursue versus stare fixedly, two different blur perceptions. Controls may adjust speed or style. The tool does not auto-score “milliseconds of blur” with scientific MPRT claims. It will not flash custom firmware. Optional links remind photosensitive users that some motion patterns are uncomfortable, stop if needed and respect Flicker Test warnings for intentional flashing. Results are experiential notes you keep, not uploaded scores. Controls may vary speed or pattern style while copy explains pursuit versus fixation, two viewing methods that produce different blur stories on the same panel. DeviceHub refuses auto-scored “milliseconds of blur” marketing numbers; you leave with experiential notes, not a fake scientific certificate. Nothing flashes custom scaler firmware or writes overdrive registers through the web. Optional reminders point photosensitive users toward stopping early rather than “toughing out” aggressive motion. Results are not uploaded as a leaderboard of panel scores, keep your own checklist of settings tried.

When to use it

Use Motion Blur Test after enabling high refresh, after changing overdrive/response timers, when scrolling text looks muddy, and when comparing two monitors side by side. Prefer Frame Skip when the issue is hitching. Prefer Refresh Rate when validating Hz. Prefer Flicker Test only with strong caution for PWM-style flashing studies. OLED versus LCD differences are educational here but not a substitute for review lab pursuit cameras. Use Motion Blur Test after enabling high refresh, after changing response-time or overdrive presets, when scrolling code editors looks greasy, and when comparing a VA television against an IPS monitor side by side. Prefer Frame Skip when the motion jumps rather than smears; prefer Refresh Rate when validating whether Hz even stuck; prefer Flicker tools only with strong caution for PWM-style flash studies. OLED versus LCD differences are educational here but still not a substitute for review-site pursuit cameras. Retail floor comparisons work if both sets share similar brightness and picture modes, otherwise you are judging tone mapping more than motion. After Windows updates that reset custom resolution timings, re-run the same pursuit at your intended Hz so you are not judging motion on an accidental 60 Hz fallback.

How it works

The browser animates DOM/canvas elements; your eyes and panel persistence create perceived blur. rAF pacing and vsync affect smoothness of the animation itself, another reason Frame Skip companionship matters. No permission prompts. Compositor can add their own interpolation. Mobile browsers may cap animation rates. This is not UFO Test hardware methodology; it is a convenient in-browser pattern set for quick judgment. The browser animates DOM or canvas elements; sample-and-hold light emission plus eye tracking creates the smear you perceive. If rAF pacing itself stutters, blur judgments muddy, Frame Skip companionship matters for that reason, with the usual caveat that those timings are estimates influenced by the compositor and vsync. No permission prompts appear. Mobile browsers may cap animation rates below desktop expectations; prefer the class of device you actually care about. This is not UFO Test laboratory methodology; it is a convenient in-browser pattern set for rapid visual judgment and setting A/B checks. Night-light and HDR tone mapping change edge contrast of moving bars, retest in a neutral SDR profile when comparing overdrive steps.

Step-by-step instructions

1. Open Motion Blur Test on the target display at native resolution and intended Hz, then enter fullscreen.
2. Track moving patterns with your eyes at a normal viewing distance and note whether edges stay sharp or smear.
3. Optionally change pattern speed or style, then adjust only one monitor setting such as overdrive and recompare.
4. If motion hitches rather than smears, open Frame Skip Test; if Hz seems wrong, open Refresh Rate Test.
5. Stop immediately if patterns cause discomfort; do not proceed to aggressive flicker tools without reading their warnings.
6. Exit fullscreen when finished; no permission revoke is needed.

Common problems

Staring at a fixed point while patterns pass creates different blur than eye pursuit, follow the instructions’ viewing method. Low Hz guarantees more smear on sample-and-hold LCDs. Overdrive artifacts look like coronas, not simple blur. Dirty glasses and low contrast amplify mushiness, check Contrast Test. Browser tearing under load can be mistaken for panel blur; reduce CPU load and retest. Staring fixedly while patterns pass invents a different blur than true pursuit, follow the on-page viewing method. Low Hz on sample-and-hold LCDs guarantees more smear; raising Hz is often the largest single improvement. Overdrive coronas look like reverse ghosts, not simple blur, step the setting down if tails invert. Dirty glasses and low contrast amplify mush; peek at Contrast Test if static UI already looks soft. Browser tearing under CPU load can be misread as panel blur; lighten the machine and retest.

Privacy explanation

Animations run locally. DeviceHub does not record your judgments or upload motion frames. No camera access is requested. Closing the tab stops patterns. Shared displays should exit fullscreen afterward. Motion frames stay local; DeviceHub does not record your clarity ratings or upload pursuit captures. No camera access is requested. Exit fullscreen on shared desks so the next person is not greeted by racing gratings.