Brave man, -20F is pushing it (so far I went out willingly for photos to around 0F)
Great light captures...I go out in temps to -10F. I don't hang out all that long, just long enough to get what I need. There is a huge difference between -10F and 0F.Wind is the killer in these temperatures.Peter
It's almost always calm when it gets this cold. On calm clear winter mornings we get an inversion and the cold air just sits here in the the valley. 1000' higher and it will be 20-30* warmer some mornings.
I live along the Delaware River in NE PA. It's a valley and often gusty winds that are punishing... this area is magical and always inspiring.Peter