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Old Jun 22, 2004, 9:22 AM   #1
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Would usiing a 500th of a sec. flash synch on the D70 rather than the default one 60th of a sec flash sync. change the results in typical shooting situationsother than changes in DOF?
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Old Jun 22, 2004, 3:43 PM   #2
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Using fast shutter speed to freeze up moving subject, using fast synchro speed does the same thing plus:

1. Your're forced to use wide openning aperture, results in shalow DOF...

2. You intend to let flash source dominate the scence, virutally flash light will kill all available (ambience light)

Condition: lighting condition must be favorable to shoot as high speed for proper exposure...in low light condition, you may not be able to use higher shutter speed.

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Old Jun 23, 2004, 3:23 AM   #3
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For daytime balanced fill flash, you would need the ambient lighting to be sufficient for the shutter speed (selecting your aperture to match).

At night and esp. indoors, when your flash will provide the main source of light - 1/500 shutter will essentially eliminate all ambient light. Which means no ghosting effect from thesecondary light source, and also aids the camera's auto white balance system. To get proper exposure at night, it is important to get your focus distance correct - as the iTTL flash system is heavily based on that and varies hugely with distance to subject.
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