There are many myths about video cameras in general, and HD cameras in particular, regarding their vulnerability to the elements. Most of this is nonsense. If you think of the amount of electronics packed into a modern film camera, what makes an HD camera more susceptible to hazardous conditions? Very little.
There are a couple of cut-out switches in the camera to protect it from abuse. It will stop if the humidity surrounding the tape record drum becomes too high, and it has to be very high indeed for this to happen. A film camera would probably be equally in trouble. This safety trip is a wise precaution, for if the humidity surrounding the tape drum ever reaches a critical point the tape will, eventually, stick to ...