Jan,
I think you're right -- I've tried everything else. Thanks to all for your
input.
For the archives:
The HP 315 digicam doesn't have this pre-flash and slaves work well on it.
The Canon PowerShot A20 DOES have this pre-flash and the slaves are out of
sync with it.
Thanks again!
Dave
>Nearly all digital cameras fire a pre-flash that is not associated
>with red-eye reduction. It is used to set white balance and
>exposure. You may be able to turn it off by shooting in full
>manual mode, but probably not. If there is a hot-shoe, you may be
>able to slap a low-powered manual flash on there to trigger the slave.
>
>There are expensive slaves that will count and discard
>pre-flashes, and I've seen circuits of simple R-C delay filters to
>go between your slave and your pack. (Of course that doesn't help
>if you are using something with a built-in slave.
>
>The quick answer is, "You're screwed." In general, digicam flashes
>don't work with slaves.
>
>(That's one reason I went with the E-20 -- it has a real PC
>terminal and a real hot-shoe.)
>
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