580 EX problem

Started Jul 6, 2011 | Discussions thread
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Lester_B
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580 EX problem
Jul 6, 2011

I have a 580 EX unit and I tried to use that little plastic rectangular piece that pulls out and goes down over the top of the flash unit. But when I used it on TTL mode I couldn't seem to get any light out of it. Even with +3 I couldn't light my subject. Then when I put it back inside it worked just fine?

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Canon EOS 5D Mark II Canon EF 70-200mm f/2.8L USM Canon EF 24-105mm f/4L IS USM +1 more
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