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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 20 Nov 2011 (Sunday) 12:08
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Problems with 580EX II

 
ergaticus
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Nov 20, 2011 12:08 |  #1

Hi everyone,
I've been using my 580EX II for years with no problems but now it refuses to work correctly and I think that it needs to be sent to Canon for repair but first I thought I would ask for an opinion to forum members.
I always use the flash as fill in HSS for bird photography and normally I'm dialing in at least -1 FEC, using Av mode.

A few months ago it happened a few times that the flash would switch automatically to TTL and fire at full power for some time. No matter what I did I was unable to stop this behaviour until the flash decided to behave again without any intervention on my part.

Now the flash is not respecting the FEC that I dial in, I can fire a burst and every sinlge photo will have different amounts of flash light. Sometimes the flash seems to fire at full power and after that the next shot is severely underexposed because the flash doesn't fire. Another thing that happens and I don't fully understand is that sometimes the metadata says that the flash fired, but when looking at the photo it actually didn't.
I've tried switching camera bodies and the results are the same.

I'm attaching a couple of pictures I took of some tree bark out of my window with -1 stop FEC, better beamer and flash mounted on camera with external battery pack attached. You can see the difference in flash output. After these two shots, the flash didn't fire in the third and fourth photos of the burst, which are almost completely dark.

Please let me know if this looks like a flash failure or user error, I haven't been able to figure out any way to solve this.

Thanks in advance for your help.


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digital ­ paradise
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Nov 20, 2011 17:37 |  #2

As far as the flash switching to TTL, that is a foot contact issue. If the foot of the flash breaks contact with the hot shoe it will do that. You can buy a replacement foot for the at Canon parts. Canon modified the foot.


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bdillon
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Nov 20, 2011 18:05 |  #3

When I heard HSS I immediately thought of this:

http://lpadesign.com/5​80EXII.pdf (external link)

Symptoms seem to fit. You don't have to be using Pocket Wizard to have the problem, HSS seems to be the culprit.




  
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tim
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Nov 20, 2011 18:24 |  #4

Bad contact between the flash and the hotshoe is my guess. Try cleaning the contacts on both, if that doesn't work you can try replacing them yourself or it's probably easier to send it to Canon service.

Try the flash on a different body to isolate where the problem is.


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dtufino
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Nov 20, 2011 19:43 |  #5

bdillon wrote in post #13427687 (external link)
When I heard HSS I immediately thought of this:

http://lpadesign.com/5​80EXII.pdf (external link)

Symptoms seem to fit. You don't have to be using Pocket Wizard to have the problem, HSS seems to be the culprit.

Weird...i've started using he FlexTT5 and Mini, and i already had to send 1 canon 580EX II to canon because the "sync" was not in Sync withthe camera, although the canon flash will fire the shutter was not catching the light, if that makes any sense.... Shipped to canon and thy fixed.

And now it's happening to another 580EX II.... i'm considering getting rid of the Flex and Mini system..... i can't afford to lose any of my flashes.


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ergaticus
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Nov 20, 2011 21:54 as a reply to  @ dtufino's post |  #6

Switching bodies and cleaning contacts didn't help. Is it safe to say that the flash needs to be sent back to Canon for repair?



  
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tim
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Nov 20, 2011 22:34 |  #7

That would be the easiest way to go. You can replace the foot yourself cheaply enough, but that may or may not be the problem.


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digital ­ paradise
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Nov 20, 2011 23:30 |  #8

I did it myself and it too about 1/2 hour. 4 very small phillips screws and a plug. You need one of those hobby/watch repair screwdriver sets. About 6 mini screw drivers that come in a plastic case.

Here si the original foot

IMAGE: http://i33.photobucket.com/albums/d74/Zenon1/_1c-7.jpg

Here is the retrofit

IMAGE: http://i33.photobucket.com/albums/d74/Zenon1/_1cc-1.jpg

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emtp563
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Nov 21, 2011 08:01 |  #9

digital paradise wrote in post #13429082 (external link)
I sis it myself and it too about 1/2 hour. 4 very small phillips screws and a plug. You need one of those hobby/watch repair screwdriver sets. About 6 mini screw drivers that come in a plastic case.

Here si the original foot

QUOTED IMAGE

Here is the retrofit

QUOTED IMAGE

What's the difference/benefit in having the pointed hotshoe pins?


*cameras: Canon 1D Mark III | Canon 1D Mark II | Canon 1D "Classic" | Canon S95
*lenses: Canon 16-35L f/2.8 | Canon 24-70L f/2.8 | Canon 70-200L f/2.8 IS | Canon 1.4x TC II
*accessories: Canon 580EX II/430EX | Quantum Turbo SC | CP-E4
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digital ­ paradise
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Nov 21, 2011 11:49 |  #10

Better contact with the cameras hot shoe. It is supposed to solve the problem of it switching from ETTL to TTL on it's own if the foot of flash breaks contact why the hot shoe.


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MusicLaw
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Nov 23, 2011 21:22 as a reply to  @ digital paradise's post |  #11

Also see: https://photography-on-the.net …p?p=13443479#po​st13443479




  
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emtp563
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Nov 23, 2011 21:29 |  #12

I like that. I lose contact all the time. I'm going to have to look into getting one of these feet.


*cameras: Canon 1D Mark III | Canon 1D Mark II | Canon 1D "Classic" | Canon S95
*lenses: Canon 16-35L f/2.8 | Canon 24-70L f/2.8 | Canon 70-200L f/2.8 IS | Canon 1.4x TC II
*accessories: Canon 580EX II/430EX | Quantum Turbo SC | CP-E4
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digital ­ paradise
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Nov 23, 2011 22:06 |  #13

Yes that has come up a few times. The other one is shooting faster than sync speed when flash is not on HSS. Seems like this the tiro of main possibilities for severe overexposing issues.


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digital ­ paradise
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Nov 23, 2011 22:07 |  #14

emtp563 wrote in post #13443545 (external link)
I like that. I lose contact all the time. I'm going to have to look into getting one of these feet.

Canon USA parts are very good with this. The person immediately knew what the part was. It was a slick operation.


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emtp563
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Nov 24, 2011 05:48 as a reply to  @ digital paradise's post |  #15

Where did you purchase the retrofit? I just looked at my 580EX II's, they both have the rounded pins. The newer one is less than a year old too.


*cameras: Canon 1D Mark III | Canon 1D Mark II | Canon 1D "Classic" | Canon S95
*lenses: Canon 16-35L f/2.8 | Canon 24-70L f/2.8 | Canon 70-200L f/2.8 IS | Canon 1.4x TC II
*accessories: Canon 580EX II/430EX | Quantum Turbo SC | CP-E4
http://www.cyclingcapt​ured.com (external link)
http://www.facebook.co​m/cyclingcaptured (external link)

  
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Problems with 580EX II
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