Two weeks ago, during a critical moment while I was shooting on a photography assignment, my Canon 5D Mark II started giving me an “Error 01″ message saying there was a communication error between the lens and the camera. I called my most favorite Canon rep and he suggested that I try the lens on a second body, just to make sure it was the lens and not the body. (I had a whole boatload of trouble with my first 5D Mark II). I put the troublesome lens, my favorite 24-105 f/4 IS USM, on my older Canon 5D and instead of intermittent error messages, the camera would lock the mirror up and I’d have to turn the camera off in order to get it functioning again. Both bodies worked perfectly with all the other lenses in my kit. I started searching for a new lens to buy because I had a sunset location to be at in 2 hours (YIKES). Every camera store I called had the lens on back order. I was luckily able to secure a loaner. Sure enough, the loaner lens worked perfectly on both bodies and I subsequently sent my malfunctioning 24-105 to the Canon Repair Center in Irvine. I am a Silver member of CPS and they turned the lens around in about a week. I’ve tested it briefly and it appears to be in good working order. They even replaced a few extra parts and put the lens back into virtually new condition. Thank you Canon!!! Here are a couple of photos which I am fond of, both of which were made with the Canon 5D Mark II and the 24-105 f/4 IS USM lens.
images copyright © 2009 Susan Seubert Photography

Wow, more camera trouble? Sheesh. Yesterday morning a photographer asked us about film. Maybe going back to that isn’t such a bad idea
Nice coconuts…
Yes – more camera trouble! Frustrating, but all seems to be well now (knocking on wood!!!). I shot 48 rolls of 120 on my last job and loved every frame. What’s so nice about large format film, to me, is that it slows you down, lets you compose and I love the square format of my good ‘ol Hasselblad. And the negatives? I can’t accidentally erase them, they won’t become obsolete in just 3 years and I can store them in a simple filing cabinet with printed caption information that won’t be stripped by some software program AND no one can just waltz into my home, take out a print and use it on their web site!!! I must say, although film has it’s limitations, I much prefer it to digital for most things…
Hi I am having the exact same problem with my 24-105 f/4 IS USM. I have tested on both my 5D and 5D mk11 with the same result.
Can you please give me the details of who you contacted in Canon, cost? so that I can contact Canon in Australia with the right info. Did they inform you of what the error was?
Thank you,
Nicolle
According to the repair ticket, Canon “REPLACED LENS ASSY 3RD GROUP/EMD, MOUNT LENS. ADJ/FOCUS”
That’s exactly what appeared under the service details section.
It was a warranty repair, so there was no charge, I am a CPS member, so the turn around was about a week.
Hope this helps.