Cold Weather Problems
I always thought that film cameras were pretty bomb proof so far as cold weather was concerned. No pesky batteries to run down quickly etc. However, in this winter's cold weather I found an issue that I hadn't been expecting. I use an adaptor to adapt batteries rather than have my 35RC exposure meter converted to use current equivalents to the PX625. I was surprised/disappointed to find the exposure meter wouldn't work in the cold temperatures (sub zero Centigrade), but that it fired up no problem inside. The reason seems to be the different coefficient of thermal expansion for the different metals (camera/adaptor/battery). The solution: a exposure meter app on the iPhone. Very cheap and adequately accurate!
Posted in case this is of interest to anybody.