Hey guys, I'm new here. I found this forum through an attempt to research online about this topic..
Well, at the end of this year (Xmas and New Years) I'll be flying to Alaska to chase the Northern Lights/Aurora Borealis.
Anyway, my main concern is the incredibly cold temperatures I'm going to be out in! Now I know that the 5D2 and 5D3 should be OK to work in those temps, as well as the 24-70mm f/2.8 my friend and I will be using.
But what I wish to find out about, are tips and stuff with dealing with the temperature changes.
I've read on this topic that somebody recommended using an airtight bag (unsure what kind?) while outside before bringing it back inside to avoid condensation.
http://www.canonrumors.com/forum/index.php?topic=17125.0
Another concern of mine is from stepping inside to outside, the sudden drop in temperature I'm scared will shatter the glass or somehow break the camera (as well as later stepping back inside, where it again would be expected to expand?).
So if anybody can please provide any information, insight or tips on this matter, I would be greatly appreciative!
I shoot on a 5D MK3 with a Canon 24-70 f/2.8 (series 1) and my friend has a 5D MK2 with the same lens.
I live in Australia, the cameras have always travelled to hot/warm destinations and the coldest would be maybe 10*C!
Thank you

Well, at the end of this year (Xmas and New Years) I'll be flying to Alaska to chase the Northern Lights/Aurora Borealis.
Anyway, my main concern is the incredibly cold temperatures I'm going to be out in! Now I know that the 5D2 and 5D3 should be OK to work in those temps, as well as the 24-70mm f/2.8 my friend and I will be using.
But what I wish to find out about, are tips and stuff with dealing with the temperature changes.
I've read on this topic that somebody recommended using an airtight bag (unsure what kind?) while outside before bringing it back inside to avoid condensation.
http://www.canonrumors.com/forum/index.php?topic=17125.0
Another concern of mine is from stepping inside to outside, the sudden drop in temperature I'm scared will shatter the glass or somehow break the camera (as well as later stepping back inside, where it again would be expected to expand?).
So if anybody can please provide any information, insight or tips on this matter, I would be greatly appreciative!
I shoot on a 5D MK3 with a Canon 24-70 f/2.8 (series 1) and my friend has a 5D MK2 with the same lens.
I live in Australia, the cameras have always travelled to hot/warm destinations and the coldest would be maybe 10*C!
Thank you