I was attempting a time lapse the other evening, outdoors and after a warmish sunny day, with a fairly cool air temp. I set my camera up and set it clicking away and left it for about 3 hours. Most of the time when I checked on it it was perfectly fine. But when I finally went out there was loads of condensation on the lens, glass and barrel, and on the back of the camera too.
I had set my camera up a few hours before it went dark, just to get the framing right, so I assume it was at the ambient temperature. It wasn't in the sunlight, so it could only have cooled down from when I set it up.
Is there a reliable and simple way to stop this happening? I hope so, as it must be a fairly common occurrence. Main reason is I don't want a damp camera as it will do it no good. Second reason is that it will ruin my timelapses!