Confirmed reports are starting to hit the web of a somewhat major issue with Canon’s flagship DSLRs. According to a report over on Canon Rumors, the Canon EOS-1DX and EOS-1DC malfunction in extreme cold, specifically the AF stops working entirely below temperatures of 0 degrees Celsius.
In reality, people have been reporting this issue for sometime, but since it requires being in very cold temperatures, many users of the cameras could be unaware the issue even exists. The Canon Rumors contains what appears to be an internal Canon repair memo about the issue, which you can see below:
Camera “does not autofocus,” “does not search in AF,” or “does not focus in AF search” depending on the reporter or the camera settings; specifically, the focus cannot be achieved in low temperatures (under 0 degree Celsius).
This phenomenon is due to the Locking Claw of the Sub Mirror (mirror for AF) going over the Locking Pin. The Sub Mirror’s angle becomes deviated and the light rays for AF does not fall on the AF sensors, causing the “does not autofocus” phenomenon.
Service of Affected Product:
To control the torque, the process to check the Locking Claw’s going over torque of Locking Pin has been newly incorporated. (From production on January 24)
Handling of units in question: If the user complains about this specific phenomenon (does not autofocus in low temperature), replace the Mirror Box Ass’y with the ones to be shipped in the future (CY3-1661-010 or CY3-1687-010).
Handling of general repairs: If the user does not mention this phenomenon, please handle as normal repair.
It seems pretty clear to me, assuming that this memo is real, that Canon is aware of the problem and has a solution. What worries me though, is the bit, “if the use doesn’t mention it, then don’t fix it.” While this saves them a ton of money, it is a little shady of them, in my opinion.
What are your thoughts on this? Should Canon be fixing this issue in all of their 1 D X/C bodies, regardless of if the user notices the problem?
[via Canon Rumors]