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Laser damage to camera sensors

If you look around the internet, you'll find videos and horror stories of how a laser light show at a concert destroyed a dSLR sensor.  The videos are scary, no question, but what I can't find is solid information on how great a risk it is.  The internet thrives on scares--but with 10 million SLRs sold every year, with every kid at a concert holding up an iPhone to video the show, shouldn't there be more widespread damage?  Instead, I can find maybe a dozen videos, some 5 years old, and not one with any technical data about the lasers.  So my questions are: will the little laser shows in local nightclubs damage my sensor?  How about at major concerts?  Does this ever occur when shooting stills, or just when video?  Obviously the risk is less with stills, since the shutter is open 1/200th of a second every few seconds, instead of 1/24th of a second continuously.  But does that mean I'm getting single pixels killed, and not really seeing it?  I don't know.

Here's the shortest video I could find of a laser show zapping a sensor.  There are more, and most of them also show horizontal and vertical lines etched into the sensor.  One showed purple blotches in the center of the frame, but I can't find it and don't remember if he was shooting stills or video. 

I know I could just shut my camera off whenever a laser appears. . .but is it necessary?  Life is all about risk management; I just want to get a better idea of what my risks actually are, without all the hype.  Thanks for whatever info you can provide.

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