Gav shows you how insanely quick the inside of a DSLR camera moves when it takes a picture, by filming it at 10,000 fps.
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Camera filmed is a Canon 7D.
This video is a good demonstration of how a rolling shutter works.
Shot with a Phantom Flex at 10,000fps
Inside a camera at 10,000fps - The Slow Mo Guys
Channel The Slow Mo Guys