This is fascinating super slo-mo footage of a DSLR's shutter in action. Particularly the champagne example at the end showing how a rolling shutter can (very rarely) lead to an odd result. Enjoy!
Interesting video. If one appreciates the extremely short duration of a flash, usually 1/1000 of a second or faster, this really highlights synch speed and high speed synch as a concept.
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Those mirror/shutters take a beatin.