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Old 03-21-2012, 03:17 AM   #5042 (permalink)
alcheng
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Quote:
Originally Posted by ZScr3am View Post
I just realized when I posted this that it looks like a few LED's are out, but when I hit the brake it looks fully illuminated. Is it suppose to look like that?
Mr.ZScr3am, your LEDs are absolutely fine, there's nothing to worry.

What happen is LEDs are just like other kinds of electric light source, it flashes at a very high frequency which is too fast for human eyes to see, therefore we see it as a solid.

However, when using a camera/video-cam to shoot it, the speed of the shutter sometimes is faster than the flash-rate of the LEDs, therefore the camera will 'catch' the moment when some of the LEDs is 'off'.

Another example is if you video shoot an old CRT TV, you will see a black-line going from top to bottom on the screen in the video, it is the same idea.

To make sure you understand, take a look at the video, right from the beginning the first 10s, the LEDs on the headlight are 'flashing', in real life, you won't see the 'flashing' but the camera caught it because the shutter speed was faster than the flash-rate of the LEDs.

Same thing at 0:53 to 0:58, then 3:59 for 2 seconds.

http://www.youtube.com/watch?v=AQyavQq8VP0

Your LEDs are absolutely fine...

note: the 'flashing' in this post means high-frequency of on-off illumination of the LEDs, NOT the kind of "flashing" you get from a flat-drunk chic.

Last edited by alcheng; 03-21-2012 at 03:23 AM.
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