Nikon studio strobe sync speeds (same as hotshoe flash?)

[fishbulb]

When using my Dynalites, what are my fastest sync speeds on the

following cameras:

F5

F4s

F100

N80

 

I'm guessing that it's NOT the same as the sync speeds I can use with

the SB28 flash.

 

Thanks!!!

Ben

[mark_scheuern]

It's the same as with the SB28. It's the highest speed at which the shutter is open across the entire frame so it's a property of the shutter and not of the flash or how it's connected.

[al_kaplan1]

Mark said it all!

[cg]

Be careful because many studio flashes have 1/250 flash duration at full output. This means you will not get record 100% flash output if you set your shutter speed above 1/250. Check the specs of your Dynalite pack for flash duration.

[ellis_vener_photography]

Thje only modern flashes I knowhta have flash durations lnger than 1/250th ofa

second are the Profoto Acute 2400 Alfa units -- the flash duration at full power is,

accordingto Profoto, 1/160th of a second. Dyna-Lights have a flash duration in the 1/

400th (and shorter) range. When looking at flash duration on units look for the t/0.1

measurement, not the t/0.5 measurement. <P>The F5 has a standard short sync

speed of 1/250th but there is an opion for 1/300th.<P> the F4s, F100 have a top

sync speed of 1/250th. <P>For the N80 / N85 bodies, I believe has a top sync speed

of 1/125th or 1/160th.

[richard_cochran]

But if the shutter speed is 1/250, that does NOT mean

that the shutter remains fully open with the film completely

uncovered for that entire time. It takes most of that

time for the first curtain to traverse the film frame,

and there's a very brief interval while the

entire frame is uncovered (the flash must fire during this

time), and then 1/250 after the exposure

started, the second curtain starts covering the frame up,

and the second curtain finishes its trip across the frame

1/250 after the first curtain fully opened and the flash fired.

<p>

I don't know of any specs for how long between the flash fire

signal is sent and the time the second curtain starts travelling.

But it's always less than the marked shutter speed. And it

may be less than the duration of some studio flash units.

<p>

For insurance, especially if you ever notice uneven exposure

across the frame, you can set the shutter to 1/125 on bodies that

normally sync at 1/250. That additional 1/250 of a second will be

time that the shutter is guaranteed to remain fully open. In

a studio setting, unless your modelling lights are a LOT

brighter than mine, ambient lighting is unlikely to be strong enough

to have any adverse effect at 1/125.