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Subject: flash/optical slave problem

I bought 2 Sigma EF-500 ST flashes for my Pentaxes. I ve the TTL
flash, but they don't behave very well with optical slaves on them...
they'll fire about every 4th or 5th flash from my master... even
with it inches away.

It's the same no matter what optical slave I use (I own 4 or 5), or
what flash they're on. I also have 2 Vivtar 285 flashes, and they
fire every time when on the same slave.

Any clue why this happens?



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Re: flash/optical slave problem

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