It's been a few years since I've enjoyed –34°C (—29°F) weather, but that's what it was this morning before dawn when my friend Kerry and I were out photographing along the Grand River here in southern Ontario.
After an hour, the temp had risen to a balmy –32°C, but, by that time, my fingers were rather stiff and a few were painfully numb (if that's possible!).
It was a beautiful morning, though - bright white snow, muted colours with the pastels of dawn in the sky - well worth the cold. Even at that temp, there was a red-tail hawk soaring and a male Cardinal singing its spring song. Besides the cold, the only difficulty was finding a view that didn't include a mash of snowmobile tracks.
The camera and lenses preformed without flaw, although focus was slightly slower and there was distinct video lag with using LiveView. Battery usage was no issue - we weren't out long enough.
Here are two... made with a D800E at ISO 100 on a tripod with MLU
#1 - 4060 - 28mm on an 18-35mm; ƒ11; EI+1⅓
#2 - 4067 - 46mm on a 24-80mm; ƒ16; EI+1⅔