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Modern TVs shows 3 times sharper motion than computer monitors
  • I dont know if this is new information to anyone but it was to me. Accordind to TV reviews visible motion resolution drops from 1080 lines to 300 lines when not using motion enhancement features.

    Thing is that a normal LCD monitor could not show sharp motion. This issue (blurred motion in computer LCD) is caused by eye/brain phenomenom called: "sample and hold display technology that causes retinal blurring"

    Due to this one can not see all the benefits of 60P sharp motion with computer monitor. Even if response time would be 0ms the situation would be the same. Scanning or stobing backlight technique is the only way to fool eye/brain to see all the details in movement. I have a very good LCD (5ms response time) and a plasma TV hooked in the same computer. When watching with plasmatv 60P videos those are tack sharp all the time and details are visible in motion. When I watch same clips with my LCD details blurs during motion. LCD is almost unwatchable right after plasma. Due to 5ms response time individual frames are still sharp in LCD during video but the illusion of motion is blurred. This is obviously not a response time matter.

    See explanation:

    From that Wikipedia page:

    "Motion blur has been a more severe problem for LCD displays, due to their sample-and-hold nature.[3] Even in situations when pixel response time is very short, motion blur remains a problem because their pixels remain lit, unlike CRT or PLASMA phosphors that merely flash briefly. Reducing the time an LCD pixel is lit, can be accomplished via turning off the backlight for part of a refresh.[4] This reduces motion blur due to eye tracking by decreasing the time the backlight is on. In addition, strobed backlights can also be combined together with motion interpolation to reduce eye-tracking based motion blur."

    When watching ufo in the center, vertical lines are sharp. When following moving ufo same vertical sharp lines becomes soft due to eye/brain, not response time. Plasma screen has no this kind of softening because of image "strobing".


    Different manufacturers use many names for their strobed backlight technologies for reducing motion blur on sample-and-hold LCD displays. Generic names include black frame insertion and scanning backlight.

    Philips created Aptura, also known as ClearLCD, to strobe the backlight in order to reduce the sample time and thus the retinal blurring due to sample-and-hold.[7][8]

    Samsung uses strobed backlighting as part of their "Clear Motion Rate" technology.[9] This was also called "LED Motion Plus" in some previous Samsung displays.[10]

    BenQ developed SPD (Simulated Pulse Drive), also more commonly known as "black frame insertion", and claim that their images are as stable and clear as CRTs.[11][12] This is conceptually similar to a strobing backlight.

    Sharp Corporation use a "scanning backlight"[13][14] which rapidly flashes the backlight in a sequence from the top to the bottom of the screen, during every frame.

    nVidia has licensed a strobe backlight[15] technology called LightBoost to display manufacturers. This is normally used to reduce crosstalk during 3D Vision, which utilize shutter glasses, however, it also eliminates motion blur due to its ability to keep pixel transitions in the dark between LCD refreshes.[16]

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  • One opinion. Do not bump topic without the reason.

  • Here are typical reviews of modern LCD TVs with motion improvement features.

    When it came to motion processing... ...the F6400 still managed to return 1080 lines from the horizontally scrolling chart in the FPD Benchmark test disc (up from 300 if [Motion Plus] was disabled), providing a welcome boost to the clarity of moving objects in fast-action sports content such as football.

    The 46in 9707 manages to cleanly draw up to about 350 lines of motion natively. This raises to a full 1080 with [Perfect Natural Motion] enabled on any setting (even the lowest).

    As with previous Samsung LED LCDs, the Samsung UE55F8000 can show all 1080 lines in a scrolling resolution test chart, provided that the [Motion Plus] system is engaged. With this feature off, you’ll see the usual LCD motion performance, which delivers just 300 lines worth of clear details. That’s enough for 24fps movies to appear without much in the way of discernable blur, but fast, high motion content like televised sports will still appear with some

    This motion test is made visually by looking horizontal panning bars with eyes.

    So LCD visual motion resolution:

    -1080 lines with motion improvement feature

    -300 lines without motion improvement feature

    Almost every Plasma TVs show 1080 lines too in theirs tests.


    It is hard to see any motion related IQ things like benefits of sharp motion with 60P, artefacts, etc. For example it is hard to see superiority of GH3 MOV artefact free motion rendering because it is impossible to even see artefacts with AVCHD with 300lines of resolution. It is also not optimal to watch hand held videos because every little movement of camera drops resolution to 300lines. It is not so big issue with 24P because motion is very soft anyway but people cant figure why it is better to shoot 60P because they dont see better sharpness in motion, only smoother motion. Videos are so best to watch with a modern TV set.