600EX AF-assist beam worse on 5DIII (1DX) than 7D

Started Jul 31, 2012 | Discussions thread
thenibster
Forum MemberPosts: 99
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Re: 600EX AF-assist beam worse on 5DIII (1DX) than 7D
In reply to AC1, Aug 1, 2012

Just point the camera with flash attached at your subject, and focus the camera. You'll see the red light the flash emits to aid focus. It fires the beam in an area wide enough to cover the selected AF point/mode. However does not work in AI Servo mode.

Nibby

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