TNEngineer
Contributor
The ambient that matters is the water temp at the dive depth. IOW, when you actually want to use the camera. If you have warm, humid air in the enclosure and then take it into cooler water, the resulting increased relative humidity inside will condense water on the now-cooler camera, interior of the enclosure, etc.
If you're going to play with temperature, you'd want to chill the components and then seal up the enclosure while chilled. When things later warm up under water, the humidity within the enclosure will *drop* (because warming air with a constant, trapped amount of moisture results in lower relative humidity).
Think about how to reduce the relative humidity inside the enclosure, and prevent the interior from experiencing a drop in temperature that would encourage condensation.
If you're going to play with temperature, you'd want to chill the components and then seal up the enclosure while chilled. When things later warm up under water, the humidity within the enclosure will *drop* (because warming air with a constant, trapped amount of moisture results in lower relative humidity).
Think about how to reduce the relative humidity inside the enclosure, and prevent the interior from experiencing a drop in temperature that would encourage condensation.
