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New Contributor
Posts: 3
Registered: ‎03-07-2018

Re: Sudden autofocus problem on 5D Mark III

I am having this very same issue.  I have always kept my camera secure and clean.  Apparently from the reply threads below this is an item that must be repaired by canon.  Does anyone know if this is an issue that is covered by their warrany program or not?  Is there perhaps a recall on this?  Thank-you.

Occasional Contributor
Posts: 10
Registered: ‎07-13-2015

Re: Sudden autofocus problem on 5D Mark III

You read the whole thread and understood what was the problem to my camera? After the repair it has worked flawlessly. I had to pay myself but the repair was not more than 180 USD which isn't too bad.

New Contributor
Posts: 3
Registered: ‎03-07-2018

Re: Sudden autofocus problem on 5D Mark III

Yes I did read all the threads. I understand that they told you that your camera's AF-sensor had somehow gotten shifted out of it's calibrated position and that you sent it in for repair and that they re-calibrated it and now it is all fixed. I also have taken very good care with my Canon 5d3 and cannot understand how this problem could have happened. I had noticed this issue for a while now, but since it was so intermittent I had not investigated it. To me it appears to be a manufacturer failure, but I have not found any recall on it yet. I guess I will have to "bite the bullet" and send it in for repair on my own dime. Pretty sure I did NOT cause this. Thanks for your info on this issue and I hope I have as good an outcome as you have.
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Occasional Contributor
Posts: 10
Registered: ‎07-13-2015

Re: Sudden autofocus problem on 5D Mark III

No problem. I was in the same position as you. They said that the sensor had been shifted out of position and that this only can be caused by a physical impact. Like you I have no idea how this might have happened. I tried to argue with the service technician who told me that it was quite common for them to hear that 'nothing has happened' to my camera.

I just had to accept the fact that I do not have full control over the camera 100% of the time. For example when I keep it in a bag I can leave this bag unattended by me. There is a small possibility that the kids might have bumped into it and don't dare to tell me <shrugh>

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