Did you know that the top of the picture on most DSLR’s is fractionally older than the bottom? This is because it uses a rolling shutter and not a Global shutter. Essentially a rolling shutter scans an image from top to bottom (or actually bottom to top as when things are viewed through a camera lens they are actually turned upside down) whereas a Global shutter takes the whole picture all at once with no scanning, pretty much all cameras use rolling shutters and it is only high end, high speed cameras like the Phantom that use global shutters.
Whilst all of us have a pretty good idea of how a camera shutter works on a DSLR, how many of us I wonder, have actually seen the process of it happening in high speed? In come the Slo Mo guys. These guys have some very high end high speed cameras, cameras capable of filming in HD at 100,000 frames per second, typically, I believe, Phantom cameras. Seriously expensive bits of kit!
A Canon DSLR is mounted on a tripod with no lens and then the inside filmed using a camera capable of 10,000 frames per second! It is absolutely fascinating to watch, and even if you have seen a camera shutter operating before, it is well worth watching the ultra high speed part of the video and actually watching a ‘rolling shutter‘ work.
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