I plan to do some outdoor photography tomorrow, and it's the first time I will have had the camera out in the cold (By cold I mean high 20's F to mid 30's F). I've heard that if you quickly move a lens from a cold environment to a warm one (i.e. take it inside a building after it's been outside for an hour), then condensation will form inside the lens and possibly ruin it.
The event is near my workplace, so I'll be bringing my camera to work. Should I just keep the camera in my car trunk before and after the shoot, or is it OK to keep it inside the building (and take it back in after the shoot)?