[avandonk]

Lester the coldest thing in the fridge is the peltier heat exchanger and that is where the condensation settles. I have whipped off the fridge when it was 3C ambient and the fridge was at -12C. There was condensation everywhere on any metal surface outside the fridge and the Canon 5DH was dry as a bone. The fan in the fridge really helps here as the air is first drawn over the heat exchanger and then blown onto the camera. This is most important as any residual water vapour will condense onto the heat exchanger rather than the 5DH! The images told me there was no condensation on the sensor.

I take no precautions what so ever with the camera. I know that the sensor is self heating and any condensation will form somewhere colder ie the peltier heat exchanger.

I did these tests in winter which is far more demanding than hot summer nights. Last night the system passed with ease as at the start of the night it was 25C and by morning 13C.

I only put these images up to show that you can collect data on a hot night even at an ISO of 1600!

I still don't have all the answers but I am getting there.

Bert