PIX 2015

metering flashes fired by CLS

Started Aug 15, 2009 | Discussions thread
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Regular MemberPosts: 201
I'm under the impression..
In reply to macdane, Aug 20, 2009

..that the on-camera flash indeed flashes briefly BEFORE the exposure to relay all the information to the other flash unit's IR receiver. Maybe if you'd add a specially made IR filter in front of the camera flash (can't remember where they're being sold but I know they exist) that blocks all visible light but lets through IR, you wouldn't interfere the metering of the other flashes (the preflash wouldn't be visible).

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