RE: Was: [OM] Digital Camera that takes OM lenses (READ!) Is now: Sync speed vs. fastest speed

[Daniel J. Mitchell]

> All the metal multi-blade shutters create a slit too at high speeds -
> highest flash sync is simply the highest speed at which the shutter is
> totally open for ANY time. 

 What's the difference between first-curtain and second-curtain flash sync?
I keep seeing this mentioned in camera specs, and while it's pretty obvious
what it _means_ (does it flash as soon as the first curtain's fully open, or
just before the second one starts to close) I don't see what it gains you to
be able to choose.

 -- dan

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