Our Motion Score and Tests

Score distribution

How motion looks on a TV is a complex subject. We define this category as anything related to moving pictures. This includes motion blur and different kind of judder issues. A TV performing well in this category should display frames smoothly, yet clearly.

Test Results

Our tests

Response Time

What it is: Amount of blur in fast motion.
When it matters: Sports, video games.
Score components:
Score distribution

Our response time test evaluates TVs for how blurry movement will look on the screen. Given the amount of movement sports have back and forth across the screen, a TV’s amount of motion blur is a big factor in how good sports and video games are going to look.

Most people shouldn’t have problems unless a TV has a particularly high amount of motion blur, but there is a fair number of people who are somewhat sensitive to seeing blur, and for whom this test takes on a bit more importance. For that reason, we consider this test very important for evaluating a TV for sports or video games. 

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Image Flicker

What it is: How noticeable flicker is on the screen, when all optional flicker has been disabled.
When it matters: All usages, but particularly when viewing fast motion (such as in sports and video games) or when using the TV as a PC monitor.
Score components:
Score distribution

The image flicker test focuses on the type of blur caused by eye tracking over a static frame. It is most significant when following objects on the screen, such as for sports or video games. A lack of flicker causes smoother looking movement with more blur, but flicker can also be used to improve fast motion. As a result, this test is more useful to determine a TVs performance for sports or video games. 

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Judder-free 24p

What it is: Whether 24p content can play without any judder.
When it matters: Only 24p content (mostly just movies).
Score distribution

This set of tests verifies whether a TV is able to play 24 fps movies without judder. If you watch movies and are bothered by this kind of judder, these results will be pretty important. If you don’t watch movies or aren’t bothered by this kind of judder, don’t worry about these.

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Motion interpolation

What it is: Also known as 'Soap Opera Effect'. It is an optional feature that increases the frame rate of the video, smoothing movement.
When it matters: If you like the look of smoothed video. Not everyone does.
Score distribution

These tests verify whether a TV is able to use motion interpolation to smooth movement. If you like high frame rates and want all videos to have that smoothed-over look, you should make sure your TV can interpolate the media that you watch. If you hate the ‘soap opera effect,’ or just don’t care about making video extra smooth, don’t worry about these tests.

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What is not included

A few elements that you might care about are not included in this score:

  • Screen tearing: Screen tearing issues are related to a frame timing mismatch between the source and the screen. We don’t know of any TVs with a V-sync option to correct this sort of problem.
  • Judder caused by poor USB playback by the TV
  • Frame skipping caused by motion interpolation
  • Frame skipping caused by poor playback by the TV’s apps

If you feel there is an item missing that should be included, please let us know in the Q&A section.

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Questions & Answers

Hope things are going well. I'm just inquiring about a slight issue I've been having. I don't want to mess with my settings too much yet until I find out if I'm on the right track. I've have the new LG OLED B6 4K TV for about a month, and just purchased the Samsung UBD K8500 UHD player. I've watched a few movies in 4K such as Salt, Mad Max and Watchmen. When I was watching Watchmen, I was noticing intermittent video judder. No audio sync or audio issues at all for that matter. Just once in a while the video would have a quick stutter. Not present during only specific scenes, just kind of random. I'm trying to understand what link in the chain is causing the issue? Could it be the media? The TV presenting the image? Or the Samsung player? I just would like to know if it is something worth really looking into or if it is completely normal. Thank you for your time. -Kyle
If the other movies were playing without problems, it could be the media. Unfortunately, we currently don't have the Watchmen movie in our lab, so we cannot test it to see if we can reproduce your problem. Just be sure to activate 'RealCinema' option under 'Setting'→'Picture options' if it is not already set. With this setting, movies playing from Blu-rays discs should be playing without any judder.
Can you tell me which TV has the best soap opera effect that's 4k 240Hz that's less than a $1000?
Most of the TVs marketed as 240Hz are in fact 120Hz TVs. If you want a good TV that can produce a good soap opera effect under $1000, you can look for the 2015 Sony TVs (X810C, X830C, X850C and X900C). Most of them are still being sold and and interpolate 60Hz signal up to 120Hz for a good soap opera effect.
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