580EX-II where is my AF-assist beam?

Started Nov 8, 2010 | Discussions thread
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580EX-II where is my AF-assist beam?
Nov 8, 2010

I have a 7d and 580EX-II flash. No matter what I do, I can’t seem to get it to give me an af-assist beam. It works with the built in flash alone but not with the 580 attached. I realize there is a custom function (8) in the flash menu and it is set to 0 (enabled). I also tried it on 1 just to see if that worked. It didn’t.

I upgraded to the latest firmware, took out the battery and replaced it, and cleared the flash setting using the info button on the camera (under the flash control menu). Still no beam.

When I try to shoot in low light with the 580, the lens searches, doesn’t find focus, and my pictures are blurry. I have checked the camera and flash manuals and have not come up with a solution. Can anyone help or do I have a bad flash unit?

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