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What exactly is sync speed?

jaymor


199 posts

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jaymor Basic Member
Sat 18-Aug-01 12:44 PM

in flash photography, does a camera only have one sync speed or is it a range 'up to' it's advertised sync speed? for example, my n80 has a sync speed of 1/125. does that mean the shutter speed 'always' stays at 1/125 whenever the built-in flash is activated as well as when a flash is attached to the hot shoe? or does the camera choose the fastest shutter speed (ie. in aperture or program mode) but only up to 1/125? actually the n80 manual says that the sync speed is 1/60 to 1/125. which makes it more confusing.

if it is variable, can i control it by changing aperture if i place the camera in manual mode (i vaguely understand that aperture is related to the flash power as well as distance)? are the rules the same as in non-flash photography except my shutter speed only goes from bulb to 1/125? the questions in my mind go like this:

' will the shot be blurred if lens focal length
is greater than 1/125
. what about action shots needing faster speeds
above 1/125
. if i make aperture smaller to gain dof will the
shutter speed stay at 1/125 or will it go down
making the shot vulnerable to camera shake

thanks for this site! my pictures have greatly improved from using what i have learned from everybody here.

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