Canon SPEEDLITE 580EX TTL Flash Problem: Flash will not stay in ETTL mode

Caroline, you should try to set the camera on "M" and the flash in 2nd curtain flash sync.

Or set flash in ATG wireless IR ETTL Slave modes and pop-up the flash on Canon EOS-70D.

Truly,
[email protected]

Jack, place the flash on the camera.
Then do the following:
1. Load up Canon EOS Utility software
2. Connect camera with USB Cable to computer
3. Turn on camera
4. Click on EOS Utility
5. Click on flash setting

More help send to my email.

atdlee@netzero,com

Are you sure those are not pre-flashes being sent out?
What mode are you in, Master, if so it is sending pre-flash to other flash.

Okay big breath, The Rebel T1i controls the flash (one reason you turn the flash on and off that's it) so you may have simply switched metering modes, with flash you should be on Evaluative mode.

Another thing is the camera may have been programed for TTL in the Menu E-TTL is the "normal" but if it's changed then the changes stays until you change it back.

I think it's the metering mode but if not you need to go into the camera Menu, Flash Control, External Flash, Flash Mode then select E-TTL. I found this all in a PDF manual of the Rebel T1i pages 139 through 141.

Hope this was a help.

There is a button with three arrows pointing to the right on your 580EX. Press this until the 3 arrows appear on your flash LCD. That is second curtain sync. The other function of that button is for High Speed Sync

If you are not in P, AV, TV or M then the camera will not allow that feature. The picture modes disable many higher, more sophistocated features.

Hi Kate,

What camera that you are having problem with those flashes?
Will switching the two have the same problems.
Make sure it is fully pushed forward into hotshoe & locked:-)

Try shooting second current, this will save you the repair costs.

Your exposure compensation was set to zero, but was your flash compensation set at zero?

[email protected]

I´ve been having the same problem with my 2 580´s. Sent one to Canon but still has the same problem. How did you solve your problem?

Send it in to canon for service. This is not a simple problem that can be fixed in this forum.