Hi there,
i am trying to get my head around flash sync speed.
The book i am reading is fantastic - 'Digital SLR Photography for Dummies'.
Basically the book ascertains that 'Most electronic flashes built into SLR's have a max duration of about 1/1000 of a sec. And that if you are shooting at 1/250 at f8, that the exposure will be provided by the electronic flash at 1/1000 of a sec irregardless. That essentially the camera's shutter speed is irrelevant when ambient light is insufficient and exposure is provided by flash.
The book goes on to define flash sync speed as the shortest shutter speed that can be used to take a picture with the electronic flash. This can vary from 1/500 sec in some Nikon cameras to 1/200 in the Rebel XT.
I hope that you can help me understand in theory the actual duration of flash speeds in SLR's and also coordinating flash and shutter. It would appear that the longest they will provide exposure initially is 1/1000 of a sec and then that they cannot provide a shorter exposure than 1/500 of sec when defining flash sync.
I appreciate this! :thumbup:
i am trying to get my head around flash sync speed.
The book i am reading is fantastic - 'Digital SLR Photography for Dummies'.
Basically the book ascertains that 'Most electronic flashes built into SLR's have a max duration of about 1/1000 of a sec. And that if you are shooting at 1/250 at f8, that the exposure will be provided by the electronic flash at 1/1000 of a sec irregardless. That essentially the camera's shutter speed is irrelevant when ambient light is insufficient and exposure is provided by flash.
The book goes on to define flash sync speed as the shortest shutter speed that can be used to take a picture with the electronic flash. This can vary from 1/500 sec in some Nikon cameras to 1/200 in the Rebel XT.
I hope that you can help me understand in theory the actual duration of flash speeds in SLR's and also coordinating flash and shutter. It would appear that the longest they will provide exposure initially is 1/1000 of a sec and then that they cannot provide a shorter exposure than 1/500 of sec when defining flash sync.
I appreciate this! :thumbup: