580EX AF Assist beam not working

gluwater

The AF assist beam on my 580EX does not seem to be working, more specifically it does not turn on at all. I cannot find my manual for it, (it is somewhere in a pile of boxes yet to be unpacked from when I moved) and was wondering if it may have been a setting I accidentally changed. I am using the flash with my 20D and under Custom Function 05 I have tried 0:Emits and 2:Only ext. flash emits with the same results. I have never dropped the flash or bumped it into anything. I have tried new batteries , alkaline and rechargeable. Nothing seems to work. Has anyone else ever run into this or know of somewhere I could look for an answer? Any help is greatly appreciated

ian408

I found this which says AF Assist doesn't work unless the camera is in One-Shot mode (won't work with AI Servo.

Hope that helps.

Ian

gluwater

Ian you are the man. I never even thought of checking what mode I was in. I must have been in AI Servo because when I just tried it in One Shot it worked just fine. Thanks for your help, I really thought I had a busted flash.

ian408

gluwater wrote:

Ian you are the man. I never even thought of checking what mode I was in. I must have been in AI Servo because when I just tried it in One Shot it worked just fine. Thanks for your help, I really thought I had a busted flash.

Glad to be of assistance.

Ian

wxwax

Way to go Ian.

And that's a fantastic link. I saved it a while ago, have never made the time to properly read it.