Keeping Your Camera Functioning in Arctic and Sub-Zero Temperatures – PictureCorrect: "Most SLRs cope remarkably well with freezing temperatures. I’ve had no problem using Canon EOS SLR cameras below zero for weeks on end, often down to -20°C and in extreme down to -30°C. This article is for those trying to keep such a camera going under expedition conditions, such as an icecap crossing or mountaineering expedition in the arctic: ie no power sockets, adverse weather, sleeping in tents on the ice and for a period of weeks. However much of the advice also applies to using a camera in cold conditions generally."
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