Input lag: How important is it?
Posted in: Today's Chili
(Credit: Sarah Tew/CNET)
Recently, CNET started measuring input lag. This is the amount of time it takes for a TV or projector to produce an image. In the worse case, excessive input lag can cause lip sync issues. In most cases, it can lead to worse performance with certain games.
Since the article hit, there’s been a surge of people ridiculing certain displays as “unacceptable” due to their input lag issues.
Hang on — unacceptable? Just how important is input lag, anyway?
OK, first, what’s input lag? As mentioned, it’s how long it takes for a TV to create an image. This includes processing like deinterlacing, scaling/upconverting, frame interpolation, and more. With movies and TV content all you might see, at worst, would be lip-sync issues, but this is fairly rare.
With games, however, this additional lag can be a serious issue. Adding 50 to 100 milliseconds between when the enemy is created by the game, and when you see the enemy (and press the button to shoot) can be the difference between… [Read more]
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