Originally posted by jatrax So why is that 1/3 of a stop so important?
something about spec sheets and being the same as everyone else.
Originally posted by jatrax I did look at some other specs and it seems Nikon d610 and D750 only sync at 1/200. But then some places it says they can go to 1/250 or 1/320 using a special reduced power mode. Not sure I understand that correctly though
This only works properly with Nikon flashes: and even then the bottom of the frame gets rather dim at 1/320th.
Originally posted by jatrax And elsewhere I read that some cameras can go higher, even 1/500 but only by using an electronic shutter.
Electronic shutters don't have any mass, so they don't have the speed limitations of physical shutters. Though at present the rolling shutter effect is quite problematic, Global shutters which don't suffer from this effect will be the next big thing - because that means we can do away with the shutter mechanism altogether, and flash will sync at practically any speed.