Susheel Chandradas explains the adverse affects of both high and low humidity on your camera, and how you can prevent your gear from growing mold on beyondphototips.com. Here’s a sample, click here to read the full article.
_Why High Humidity is bad for your equipment
Fungus or Mould thrive in dark, humid places where there is little, or no movement of air (sound familiar? look at where you store your camera equipment). Very often camera equipment ends up in drawers, cupboards, or basements; all of which are dubious places to store them. Remember that keeping your camera in storage for too long is also a recipe for fungal (and mechanical) disaster. Lenses and cameras need to be kept in use and exposed to light and fresh air from time to time. A camera or lens that is used well, and stored correctly is most likely to see many years of successful picture-taking._