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Okay, it only shoots in monochrome at a size of 312 x 260 pixels, and as such, I guess, isn't really meant for cinematic purposes, but this camera from Shimadzu can shoot one million frames per second. $205,000.
There are 3 links to video clips at the engadet post that were shot between 8,000 and 10,000 frames per second. Wow. I want to see one at a million frames per second please.