amfoto1 wrote:
No... Full flash that's needed to "freeze" action in most cases doesn't typically give you the equivalent of 1/10,000 shutter speed.
Most fire "full flash" (as opposed to "fill" or reduced power) at approx. 1/720 to 1/1000.
There are special, ultra high-speed flashes and strobes available, capable of shorter durations along with high output levels.
And both studio strobes and portable flash will use shorter durations when set to reduced power settings.
For example, Nikon SB-800 specs (manual mode):
1/1050 sec. at 1/1 (full) output
1/1100 sec. at 1/2 output
1/2700 sec. at 1/4 output
1/5900 sec. at 1/8 output
1/10900 sec. at 1/16 output
1/17800 sec. at 1/32 output
1/32300 sec. at 1/64 output
1/41600 sec. at 1/128 output
Smaller, lower-powered flashes that have less "reach" tend to have shorter duration at full power.... While bigger, more powerful ones with the greatest reach often have longer duration. For example, the Nikon SB-300 (18M guide number) has 1/1650 duration, while the nearly twice as powerful SB-910 (34M GN) has 1/880 duration.
Still, 1/720 to 1/1000 is fast enough to freeze much action.... And when it's the sole light source, the flash itself acts like a shutter of sorts, so that the camera's flash sync speed is less relevant.
This may make image stabilization less necessary when using flash. But it also probably won't hurt to leave VR turned on.
If using slower shutter speeds and/or reduced power flash for fill, i.e. recording more ambient light along with the flash, it's probably a good idea to leave VR on for handheld shooting.
No... Full flash that's needed to "freeze&quo... (
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:thumbup: Right from the SB800 manual. The SB900 is a bit slower and ranges from 1/880 to 1/38500.
I find that unless I use high speed sync when shooting birds the flash by itself does not always freeze the action. The shooting distance is usually between 15-25 ft.
I turn the VR off when the camera is on a tripod and leave it on the rest of the time. Never really thought about VR with respect to flash just followed the VR recommendations.