Originally posted by MarkF
Yes, I think about -15 to -20F is about my limit. 20 to 25 F feels pretty balmy about now - it's all a matter of what you get used to.

At 20-25 f I overheat during ascent if I have too many _layer_s on. It's nice to have the _layer_s when you're sitting in the tree trying to set a new TIP or doing one of the other fun activities that might keep you still for more than 5 or ten minutes in the climb. When the wind blows hard enough it's uncomfortable at any temperature below mid 20's.

I've used my digicam down to around zero, it works fine but the rechargable batteries die fast. I carry extras in my pants pocket to keep them warm so they won't lose their charge as fast. The key to camera and lens health in cold weather shooting is to keep it in a zipped bag when you bring it back into the house and let it warm up gradually.
-moss