Some of the things we have heard that were blamed on shooting in cold weather is camera malfunctions..lenses fogging up..batteries going dead..white balance problems..flashes not working..to name just a few. If cold weather was so damaging you would think that cameras would come with warnings not to use them in cold conditions and yet stories and rumors about problems with cold weather continue to propagate.
What’s Really Going On
There are actually two issues to deal with in regards to shooting in cold weather, battery life and condensation. Batteries will not last nearly as long in the cold as they do in warmer conditions. When people have complained about equipment failures due to cold weather, almost always this is due to batteries going dead far faster than expected. This can manifest itself as camera problems..flashes not working..and numerous other electrical problems. if you are used to shooting and warm weather and find yourself shooting in a very cold conditions..be sure to plan ahead and have at least twice as many batteries on hand as you would normally take. Keep unused batteries in the car or jacket pocket to help keep them warm.
A more serious problem is condensation. Condensation can occur inside your camera body and inside your lenses if lenses have got too cold and you take them into a warm location. This can obviously cause severe problems for your lenses if they get fogged up inside and condensation inside the body will create moisture that can result in very costly repairs. The primary cause for condensation is when taking equipment from the cold condition into a warm condition too quickly. If you have been in very cold conditions, take your time bringing your equipment back to room temperature.