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      11-04-2019, 06:20 PM   #1835
hans007
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Drives: 2020 BMW M340i
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Quote:
Originally Posted by xraymd View Post
LED lights appear to “blink” on video but you wouldn’t see that with your own eyes. It’s an illusion.
its not an illusion. Its PWM (pulse width modulation) that LEDs use.

they flicker really fast so your eye only sees the average brightness, but cameras will take a frame depending on the frequency the camera is recording at vs the frequency of the pwm.

I think some cameras can correct for this, but it happens with LED bulbs / led backlit TVs too
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