How does a high speed camera shutter work? Here's a video of it, in slow motion. Phantom slow mo cams show us just how crazy fast these cameras work. From at 1920 frames per second, here's a Nikon D4 shooting photos at a rate of 10 frames per second.
The mirror flips up and first curtain drops at each photo and exposes the image sensor for 1/200th of a second, of which then the second shutter drops to complete the exposure. It's an amazing feat. Check out the video below: