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Flashes
max flash sync speed
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<blockquote data-quote="aroy" data-source="post: 383172" data-attributes="member: 16090"><p>As others have said, if the flash is the dominant light source, then the synch speed does not matter. It will be over in less than 1/1000 of a sec. Note that the flash will fire when the shutter is wide open, that is the first curtain has opened and the second curtain has not started.</p><p></p><p>The problem starts when you want the flash to fill in, that is there is enough ambient light for a normal exposure at higher speeds, and the flash is used to modify the shadow region. That is when you may need a faster synch speed. Unfortunately, the focal plane shutters used in Nikon cameras do not operate faster than 1/250 sec at the maximum, and at 1/200 in most. For faster speeds you need the shutter in the lense. These lenses then enable the flash to synch at 1/500, 1/800 and in some cases 1/1600 of a second. Some of the cameras that support lenses with shutter are Hasselblad, Rollie and Phase, these are all MF cameras, most of the current 35mm cameras do not support lenses with shutters.</p></blockquote><p></p>
[QUOTE="aroy, post: 383172, member: 16090"] As others have said, if the flash is the dominant light source, then the synch speed does not matter. It will be over in less than 1/1000 of a sec. Note that the flash will fire when the shutter is wide open, that is the first curtain has opened and the second curtain has not started. The problem starts when you want the flash to fill in, that is there is enough ambient light for a normal exposure at higher speeds, and the flash is used to modify the shadow region. That is when you may need a faster synch speed. Unfortunately, the focal plane shutters used in Nikon cameras do not operate faster than 1/250 sec at the maximum, and at 1/200 in most. For faster speeds you need the shutter in the lense. These lenses then enable the flash to synch at 1/500, 1/800 and in some cases 1/1600 of a second. Some of the cameras that support lenses with shutter are Hasselblad, Rollie and Phase, these are all MF cameras, most of the current 35mm cameras do not support lenses with shutters. [/QUOTE]
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