5D mark III problem - 32gb sandisk extreme pro destroyed

[serendipidy]

There is a big bug in the 5D Mark III card handling system.

I report the bug long before the 5D Mark III hit the market but nothing happend.

The same CF cards work perfectly in the 1D X.

YES, I think there is a bug. It happened recently to me with a brand new USA warranty 5D3. It worked fine for 2 weeks and then I sent it in to Canon's Irvine, CA Service center for calibration with my 70-200Lii lens. When it went in, it had the newest firmware 1.2.1. When it came back (later I discovered it NOW had the older firmware 1.1.7), after shooting about 160 RAW shots, I started to download to my Macbook Pro using the USB camera cable, and halfway thru, it crashed my EOS Utility software and froze. I could do nothing but turn everything off. I tried everything and it still would not work. I recently posted this on another thread several weeks ago. I took that CF card out of the 5D3 and put in my 7D and it worked fine and downloaded those photos that the 5D3 crashed. I tried more shoots and the exact same thing happened again and again. I took it to the Honolulu Canon center and they tried it with my 5D3 but with their CF card and their computer and it crashed their computer EOS Utility also and froze. They sent it back to Irvine and it came back with the newest firmware 1.2.1 now installed again. Now it has been working OK so far and will download OK. However, with the first shoot or two, my file numbering system was acting strange, switching by itself from my factory designated camera file name to IMG_ and back. Now, it seems to be OK. I initially tried multiple CF cards, which I always format in the camera I am using for that shoot, and they all failed with my 5D3 before the second trip to Canon's Irvine service center.

 

[ForumMuppet]

I had an issue with a Sandisk Extreme Pro 32GB card giving an unrecognized error. After a few days I was able to format the card and take shots again. Being the card was only a month old, I contacted Sandisk explaining my lack of faith in the card not going bad and losing shots. After verifying the serial number and retailer where I purchased the card, the rep informed me the Extreme Pro cards are guaranteed for life and gave me a new replacement. From that customer service experience, I will only use Sandisk Extreme Pro cards moving forward.

If you have not already done so, I would suggest contacting the Sandisk customer service for a replacement card.

 

[vanermi]

Now I have much faster more expensive CF cards and they failed back to back after already being used for weeks. Then yesterday another one fails

Since you refer to 5DMK3 and to newer faster cards at the same time you must admit that you changed 2 parameters at once. So there is no proof like it or not. Proof would be if the old CF cards that worked fine in 5DMkII were damaged in 5DMkIII. And vice versa if the newer faster CF cards had worked with no problem and with the same scenario in 5DMkII and NOT in 5DMkIII.

That being said, have you sent your 5DMkIII to Canon?

This latest card the fried was used a lot on my 5D Mark II. No I haven't sent camera in, just spoke with them. I just purchased new Komputer Bay cards and if they go, I will send camera back and they will replace pin bed. Then if still wrecking cards, new camera?? It's frustrating.

 

[serendipidy]

My 5D3 and CF cards seem to be working OK now.

 

[AdamJ]

I'm not suggesting that bent pins in the OP's 5D MkIII are the cause of his troubles, but in case anyone doubts the existence of bent pin problems, here's a quote from Roger at LensRentals:

"However, some common problems we saw a year ago like the 5D Mk III having bent CF pins and the D800 battery doors snapping off seem to have been fixed and have ceased to be an issue at all."

So it seems it was perhaps a problem in earlier Mk III bodies but not in LensRentals' newer Mk III inventory. The full article is linked below.

http://www.lensrentals.com/blog/2013/08/lensrentals-repair-data-2012-2013