Hi people. I will be leaving for a northern region of South Korea soon and supposedly the temperatures there might reach around -29 deg Celsius. I will be taking my EOS 400D with my EF-S 17-85mm IS USM and EF 70-200mm f2.8L IS USM along. Will there be anything special/unusual to take note of or to bring to prevent my equipment from getting damaged? I will be staying in a tent for quite some time so obviously no dessicator cabinet but I also don't intend to bring a dry box of sorts. Is it fine to leave the set-up in the bag for around 10 days? Thanks!