I just used the NTG-3 in subzero temps in Ouray, CO this week; or perhaps I should say I TRIED to use it -- it completely failed in temps below 10 degrees. We would warm it up in the car and test it -- it worked fine; and then it quit immediately in the cold. One day it worked when temps rose to 15-20; but the next day it didn't at all in similar conditions. We put our Zoom H4n on the boompole as a replacement to get us through.
Reading this thread, I don't see condensation as an issue. I could be wrong, but doesn't condensation really occur in the move from cold temps to warm, not in the other direction? I see this all the time with my camera gear, and have never had a problem moving from warm to cold environments.
Can anyone recommend a truly proven cold-weather shotgun mic? Thank you,
Tyler