Condensation can be an inconvenience, but for photographers, it can be a real problem. A couple years ago I was on a cruise down the Yangtze River in China and one morning got up and stepped out on the balcony to photograph the sun rising over a bridge. My camera was quite cool after being in the air conditioned cabin all night and when I stepped out onto the balcony a heavy coating of condensation covered the camera and lens.

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