5D Mk III Err 01 message with 24-105mm lens

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Aug 7, 2013
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I went to the Galápagos Islands last month using the above combo with no problem for 4 days and on the last day I let my wife use it while I used my Sony FS700 to do super slo mo videos. It was a cloudy day with light rain, the Sony got a bit wet but functioned with no problem and so did the 5D Mk III. I dried them both off afterwards and they were both working fine too the day after that. Then 2 days later when I got to Cuzco, Peru (it was cold but sunny), I started getting the Err 01 messages occasionally, then a few days later, I just got the Err 01 message constantly and the lens stopped functioning. Luckily I have a Zeiss APO Sonnar and Planar which were working totally fine, so I thought the problem was with the lens. But now that I'm home, I tried out the 24-105mm with my 5D Mk II and to my surprise, it's working totally fine, while I still got the Err 01 with the Mk III. Has anyone here had a similar problem with the 5D Mk III and 24-105mm? Not sure if I should get a new one or try to get it repaired. Any suggestions? Many thanks in advance.
 
It sounds like your body has a problem, maybe it got wet as well.
You did not mention if a different EF lens worked fine on the 5D MK III.

I'd reset the camera body, remove the battery for a few minutes, and try again. When using a non canon lens, I've had lockups happen and a reset fixed it.
 
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Yeah, my EF 300mm f 4 was/is working totally fine with the Mk III. I did suspect it was the camera at first because the shutter speed got stuck at 1/8000 a few times when I was using the Zeiss on the first 2 days in Peru, but it hasn't done that since. I will try reset the camera now, thanks for the suggestion.
 
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Get the lens and body chequed, remember that the 5DIII body is not waterproof.

This sounds like it is the body, and waterdamage can be very acute, but most of the time it is a slow and progressive type of damage, because any dampness will cause corrosion.
 
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Thanks for everyone's suggestions, I just followed Mt Spokane's suggestion and reset the camera by removing the battery for a few minutes, seems like it's working fine for now, will check again tmr to see if it's totally cured.
 
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$369 seems a bit much! That's like 1/3 of the lens price!

michaeltruong said:
Er01 on EF 24-105m is the lens problem. I had the same issue. Shoot wide open >f22 will result in consistent Er01. Got the lens fixed from Canon for $369. The lens' diaphragm needed to be replaced.
Good luck.
-mt
 
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Danz said:
$369 seems a bit much! That's like 1/3 of the lens price!

michaeltruong said:
Er01 on EF 24-105m is the lens problem. I had the same issue. Shoot wide open >f22 will result in consistent Er01. Got the lens fixed from Canon for $369. The lens' diaphragm needed to be replaced.
Good luck.
-mt

That's more than half the lens price if you buy a white-box lens (split kit).
 
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