Cold can drain batteries, so it's a good idea to bring plenty of extras. Keep your spare batteries in an inside pocket, near your skin and under your jacket. Your body's heat will help preserve them. You may end up rotating your batteries over and over if shooting for a long time on a cold day. Take special care coming in from the cold.
Condensation can ruin cameras as well as film.
To prevent this, try putting your camera and film canisters in a sealable plastic bag or even in your pocket while you're outside taking pictures. Then, when you come back inside, keep your camera and film inside that pocket or sealed plastic bag until they adjust to the indoor temperature. Wait an hour or so before taking them out, just to be safe. Also, visit our previous galleries .