580ex Auto Zoom function.

Is there a list of which lenses the 580ex automatically zooms with? It seems to be stuck on manual zoom when I use my 24-70L and 85mm 1.8. I have the flash setup in ETTL mode and I'm using it with the 1DMKIIN body.

All zooms. If it stops zooming you need to replace the batteries. That the first indication of weak battery.

bbc14f wrote in post #2921495
Is there a list of which lenses the 580ex automatically zooms with? It seems to be stuck on manual zoom when I use my 24-70L and 85mm 1.8. I have the flash setup in ETTL mode and I'm using it with the 1DMKIIN body.

Well first it's not going to move on the 85mm f/1.8. It's a fixed focal length lens.

Second, use the zoom button and dial to cycle back through until you see the "M" next to the word "Zoom" go away.

Well there is a fresh set of batteries inside.
When the 85mm is on the camera it should still display 85mm on the flash display correct?
And when the 24-70 is attatched it should display the same zoom that the lens is at. When I press the zoom button and turn the dial until the M disppears all I get is -- and no numbers indicating what the flashes zoom range is. Also that little gem Icon in the upper right hand corner never appears. I think its supposed to indicate that the lens and flash are zoom compatible.

bbc14f wrote in post #2921557
Well there is a fresh set of batteries inside.
When the 85mm is on the camera it should still display 85mm on the flash display correct?
And when the 24-70 is attatched it should display the same zoom that the lens is at. When I press the zoom button and turn the dial until the M disppears all I get is -- and no numbers indicating what the flashes zoom range is. Also that little gem Icon in the upper right hand corner never appears. I think its supposed to indicate that the lens and flash are zoom compatible.

Are you bouncing? You'll only get zoom if you're pointing the flash straight ahead.

Exactly what i thought, flash has to be set to 90 degrees flat.

You guys all Rock...hard! I knew there was an obvious explination! Well back to picture taking, y'all have a nice day.

My 580EX set at normal, and 17-85 lens on 20D, the flash will zoom to 80mm on the 85mm lens setting. It will zoom to 105 [max] on the 105mm setting with my Sigma 70-200 f/2.8 lens attached--but it still works fine. Better Beamer works beyond that rather swell,. There is a bit of vignetting at 17mm but not really bothersome and it goes away at 24mm without the wide diffuser.

U really neen to take lo of learning pics with your set up to understand it!

Rudy M. wrote in post #2925034
My 580EX set at normal, and 17-85 lens on 20D, the flash will zoom to 80mm on the 85mm lens setting. It will zoom to 105 [max] on the 105mm setting with my Sigma 70-200 f/2.8 lens attached--but it still works fine. Better Beamer works beyond that rather swell,. There is a bit of vignetting at 17mm but not really bothersome and it goes away at 24mm without the wide diffuser.

U really neen to take lo of learning pics with your set up to understand it!

Thanks Rudy!