Every winter, I am using Voigtlander or Zeiss folders at temperatures around or even less than minus 10 F
Same goes for my Leicas I,II,III or my FED NKVD's.
At such low temperatures, most of the battery powered rangefinders will ballpark in disability state.
At low temps, SLR's mirror and GG are up for a challenge as well. Been there, done that.
Voigtlander Perkeo or Zeiss Messa Ikonta weight less than M2 and are smaller package.
The Voigtlander Bessa I optical finder have parallax compensated frames for close distances.
Originally Posted by vpwphoto