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Old Mar 29, 2003, 9:50 AM   #11
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Thanks guys,
I have now become an expert in the art of preflashing .

Peace....

Shiggy
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Old Mar 29, 2003, 9:52 AM   #12
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Default Re: How come flash shoots twice?

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Originally Posted by NHL
Some camera like the D7's for one can be programmed to disable this pre-flash since this is very annoying when taking picture in the studio with photoeye slaves where the external strobes all go off with the pre-flash instead of the main burst!!!
That's where Digislaves solves the problem...these are slaves that know about the existance of the preflash, and know to fire on the second flash.
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Old Mar 29, 2003, 4:09 PM   #13
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Quote:
That's where Digislaves solves the problem...these are slaves that know about the existance of the preflash, and know to fire on the second flash.
... Not quite. This device is nifty until one realize that there's a wait for the camera to recycle it's flash and the lightsource that the camera's flash contribute to the overall lighting which limits its use! ops:

The built-in flash power on the D7's can be reduced to 1/16 or less just for this purpose, hence it's as speedy as one can squeeze the shutter and do not contribute to the overall lighting, which is what the studio strobes are designed for, ie to control the angles of the incident lights... and quick recycle time 8) 8) 8)

BTW one can also shoot more single burst @1/16 power than 2 flashes @ whatever camera settings until the batteries are depleted. Just plan on having a lot of batteries for studio shots this way... :evil:
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