You could buy a few of the Phottix-type wireless remotes and trigger them all with one control
Yes, oh Fractious one it should. I can't see any reason why this wouldn't work as my D80 and D300 versions would trigger each other
But they are reliable.Pocket Wizards are hardly inexpensive?
< £50 for the Phottix ones or £600 for the Pocket Wizards.
Decisions decisions.
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But they are reliable.
How many cameras are you talking about.