Originally posted by Wheatfield A focal plane shutter is, in essence, a rolling shutter when it gets above the sync speed.
This seems like a discussion of "distinction without a difference".
At one time I photographed a fan to demonstrate "rolling shutter" on a 'Q'. The first photo shows use of the Electronic Shutter on my Q-7.
Then I photographed the same fan with my K-30.
The shutter speed I chose did not quite 'stop' the blades. but that is not the point. The K-30 photo shows a clearly recognizable fan, and there is no noticeable blurring resulting from my own movement.
Likewise, my photograph {with a long lens } of a bird was clearly recognizable as a "Baltimore Oriole", with no noticeable 'loss' because I hand-held the camera instead of running inside to grab a tripod {while the bird flew away}.