- Jan 21, 2015
The travelled distance doesn't directly affect the shortest exposure time as it is achieved by first curtain opening and the second closing at the same time (at which point they can travel closely as long as necessary). It's more about how accurately they travel.1/16000 top SS is mechanically-achievable given the physically shorter distance the shutter curtains need to travel in front of an APS-C sensor. I think Canon can even do a 1/300 mechanical X-
Flash sync could be achieved at higher speeds, yes.