Written by Laurence

What is input lag?

An image from your Blu-ray player or console never directly appears on your screen because each image signal has to go on a small journey that takes a couple of milliseconds. This delay is called input lag. If you play video games, this is an important specification to keep in mind. On this page, I'll tell you more about it.

How input lag works

Input lag is caused as follows: each image is generated by a source, like a console. After that, this image is sent to your TV by wire or wirelessly, processed, and shown on the screen. This entire process takes up a couple of milliseconds. The exact number differs per TV. There are televisions that only have a 20ms input lag, but there also TVs with an input lag of 100ms. The higher the input the lag, the bigger the delay.

The importance of a low input lag

The input lag of a TV is only important when playing video games. When gaming, there's a small delay between the controller and the action on the screen. This can negatively affect different types of games. Think of a racing game, during which you take a corner at the very last moment. If the game registers your action too late, you'll crash into the guardrail. With a shooter, you're at a disadvantage if the opponent sees you first and is quicker to react.

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