This video from the Slow Mo Guys shows us a great look at the shutter movement inside the Canon 7D at a range of shutter speeds, all the way up to 1/8000s.
It is a view we don’t ever really get to see even if we do understand the process of how a focal plane shutter works. Thanks to a Phantom camera that shoots HD video at 10,000fps, we get to see up close and in detail the mirror and shutter operation.
As you are watching, note the vibration of mirror on its impact and consider how that will affect image quality as much slower shutter speeds.
Very cool to see this in detail.