Redrocks wrote:
I used one last year on a wintertime Northern Alaskan Aurora borealis trip and it worked great. I had no problems with brittleness. The coldest it got was -6 F however.
The problem with quoting apocritical incidents as proof that a given solution that worked in one situation will work in another situation is that there is no evidence that any given hypotheses was even tested in the first place, or that it would be applied in the second place.
An example! Don't worry about condensation at all going from a cold outside into a given warm building. After many times never seeing a problem it seems correct to say one need not worry!
But the building normally may have virtually no moisture added to colder outside air that is heated to warm the house. (A very common situation for a typical home, and almost universal for a cabin.)
Then one day a very expensive camera is brought into the same house just after the kids have taken bathes, the floor was mopped, the clothes washer is started, and dinner is on the stove. I.e., that house is loaded with moisture! The camera in ten seconds is soaking wet with condensation. It requires several hundred dollars in repairs and eventually will still suffer damage from internal corrosion.
On any given occassion we can't know how much condensation may happen until it is too late. The only answer is to always protect against the worst possible.
What is the best protection? If you have never actually encountered real worst case scenarios it will be impossible to relate imperical results. I.e., if you test solutions in Denver it is interesting, but not definitive.
I've been testing at the two coldest locations in the US, for over 4 decades. Fairbanks AK gets as cold as anywhere in the US and Barrow AK has the lowest average temperature of anywhere. Twenty years in each place constitutes an excellent test
Once again, a kitchen size plastic trash bag is by far the best solution available. It happens that on occasion that can be adapted to the situation too. On many occasions I have pressed a plastic shopping bag from the grocery store into use to save a little time...