Hello folks am back from the icy wastelands of Lake Winnipeg and have superficial frost bitten hands (did someone here say that I should have kept my big thick protective gloves on?)....anyway will have that written up on my website next week. Missed the -45 degrees by a week and had to cope with a balmy -23 instead!
Anyway what did I learn about cameras in the cold:
1. Lithium batteries are the way to go. The NiMH batteries would not operate even in a warmer tent (-10). The NiMH batteries are now working in 9 degrees!
2. We each had a Nikon digital coolpix camera (nice easy point and click) - 3mp and 7mp. Both worked well even when it was -20 and windy. The battery appeared to be low on juice on day 3 but still kept going until the end of the walk about (5 days).
3. Brought a Minolta 70W RIVA - (because I have one). It refused to work even in -10. Had to warm it up under my armpit to get it going.
Thank you for all the great advice here and will see if I can get a manufacturer to let me trial a camera in 2008 in the Arctic circle when we train next