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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 09 Dec 2009 (Wednesday) 22:41
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580exII Troubles...

Jonathan ­ Taylor
Senior Member
699 posts
Likes: 6
Joined Feb 2008
Location: Sterling, Virginia
Dec 09, 2009 22:41 |  #1

Ugh. Frustrated.

I just bought my first 580II, after having been using a Sigma 530 Super for a couple years. I never had any e-ttl problems, or issues where the flash decided to not fire.

So I unboxed the flash, put in brand spanking new batteries, put my XTi on Av at about 5.6, and nothing. Played around, stared at it a bit, clicked the shutter a few times. Still nothing. Then randomly, SOMETHING! Then it worked just fine in e-ttl. Then out of nowhere, nothing.

It went on like this for a couple hours, where it would fire sometimes, and then not. I'm normally really good at fixing stuff like this, and also good about not asking stupid questions without research. I've found nothing that really explains what's going on here. I apologize for being so vague, but this phenomenon is just as random as it sounds.

I've also noticed that it repeatedly switches between e-ttl and ttl on the back of the flash, completely at random (from what I can tell).

Can someone please give me a heads up as to what's going on here? Is it user error? Flash error? Body error?

Oh, and I'm not sure if this is relevant, but my pop-up flash stopped popping up about a year ago, but it doesnt bother me at all because I only used the sigma anyway.

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Curtis ­ N
Master Flasher
19,129 posts
Likes: 5
Joined Apr 2005
Location: Northern Illinois, US
Dec 09, 2009 23:13 |  #2

You have all the symptoms of a bad connection.

Remove and reattach the flash, making sure it's fully inserted in the hotshoe and locked down completely. Make sure the camera's hotshoe isn't loose.

"If you're not having fun, your pictures will reflect that." - Joe McNally
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137 posts
Joined Jun 2008
Location: Adelaide, Australia
Dec 09, 2009 23:41 |  #3

There's also a switch that prevents the inbuilt flash from popping up when you mount one in the hot shoe. Sounds highly likely that your camera is at fault and your hot shoe needs looking at.

To rule out the flash, try it on another body. being brand new, it should work properly.

Michael Swann
6D+EF 24-105 f/4L, EF 17-40 f/4L, EF 70-200mm f/4L, 580 EX II, 430 EX III, Sekonic L-358
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580exII Troubles...
FORUMS General Gear Talk Flash and Studio Lighting 
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