I was on assignment with a colleague in Costa Rica. We flew a Cessna Caravan from San Juan, which is nearly 4,000 feat elevation, to a beach on the Pacific Coast side. San Juan, relatively cool and dry to the beach which was warm and humid. I put my gear in the un-air-conditioned cargo pod while my colleague kept his in the air conditioned cabin. Upon arrival at warm, humid sea level I was able to shoot immediately while his gear was fogged for an hour.