So I'm heading west over to Canada to live, travel and take some pics for the next while. I've bringing a full arsenal of lenses as I intend to shoot as much as possible. E-M1 + HLD-7 + extra battery 12-40 Oly Pan-Leica 25 Olympus 45 Olympus 75 Pan 100-300. + lens hoods for each lens etc... Right now, where I am going the temperature has dropped to minus 25 and fallen as far as -35 at night (celcius). I've never operated a camera in these kinds of temperatures before and while I know the E-M1 and all m43 lenses are freeze proof to -10, does anybody have any experience of shooting in such cold. Should I expect any performance impact - battery I'm thinking may be impacted or may not work at all?? I'm also aware that the 12-40 is moisture and dust resistant so will prob be my mainstay if it is snowing when I'm shooting. I'm planning to pick up a plastic bag type of protector for when shooting the 25, 45 and 75. Any tips of advice is greatly appreciated - particularly from those who shoot in colder climates. Tom.