Originally Posted by M_Six
The +1Ev is working well. I use it often, especially indoors. It really does help with noise. I can see where it can blow out some whites. In this pic of my cat, her very white fur is blown out in spots near the bottom of the frame just left of center. Not much noise for a 1600ISO shot, though. Better to have reduced noise, IMO.
Great shot mark!
you have to be carefull with the condensation, because it happens inside of the camera body and lenses as well as the outside. you have to let them acclimatise as DC was mentioning. I've read somewhere that people put their lenses in zip lock bags to keep the moisture levels from changing too much.
if you're in and out of the cold to warmth a lot, this may be a consideration for you.