First video of an electron in motion, from a link in Discover magazine. The electron image is basically captured using stroboscopic principles, but the bursts of light are each one attosecond long. That's one quintillionth of a second. 1e-18s. Or, as described in the article, consider that one second contains about twice as many attoseconds as there are seconds in the 14-billion-year life of the universe. That's a fast 'shutter' speed for any camera.