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Hi Alister,
What camera do you usually take to these expeditions?
I wonder if you’ve encountered any trouble with a particular camera in the extreme cold, or if you have a certain preference in these situations. I wonder if the A7S would be a good choice camera for this, or if the metal body would make it freeze faster. I may be going on a similar trip in northern Canada, facing -25 degrees constantly.
Thank you for any advice!
I’ve taken all sorts of cameras, F55, EX1, A7s, a6300 and all have performed surprisingly well down to about -20c. When it goes below -20c the smaller cameras do suffer more, generally the really small batteries struggle in the very cold temps, but are still useable. As you approach -30c the battery life really starts to fall away on all of the cameras, but a large camera with a big battery will be less effected than a small camera with a small battery simply because the bigger camera takes longer to cool. However after 30 mins or so, both big and small cameras will be getting cold to the core. The smaller the battery the quicker it can cool down, so the less it lasts. Power an A7s from a large external batter and it will work very well at -30c provide you only use the electronic shutter, the grease in the mechanical shutter gets too stiff when it’s very cold.