>
> If the camera believes, at the start of exposure, that the
> exposure time will be faster than 1/60 second the flash will
> not be fired and the second curtain will be started on its
> way before the first curtain is fully open. If the camera
> believes, at the start of exposure, that the exposure will be
> 1/60 second or longer then it will wait for the first curtain
> to be fully opened and the flash will be fired. It takes the
> first curtain 1/60 second to get across to the other side.
> Even if the second curtain is released instantly the exposure
> will be 1/60 second. It can't be faster. If the flash
> doesn't fire or is underpowered then the camera (in auto
> mode) can extend the shutter time. But if the flash is
> overpowered there's nothing that the camera can do. Even if
> it could move the shutter curtain faster it wouldn't help.
> The exposure has already been made.
>
Exactly !
...Wayne
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