12-27-2018 10:54 AM
I have been on ten day shoots in the Colorado mountains and other cold locations where it didn't get above 0C the entire time. Everything from my F1n to my 1DX has worked flawlessly. Don't worry about it, it will be fine.
12-27-2018 05:09 PM
Well I'm up here in Ontario too (Ottawa) & the trick as has been mentioned is warm batteries. The camera may not work exactly like it did in summer but it should work under any reasonable winter condition BUT there are procedures most use when bringing camera gear back inside after a day in the cold. You want to let it come up to room temp slowly in an area or camera bag that keeps condensation to as low a level as you can control.