I foind my 450d ran at about 26c on extended exposures.
That was in summer when the air temp was about 23c
My friend ran his 700d at about 40c at the same time with similar exposures.
we both have battery eliminators. why they are so diffetent i don't know.
The noise produced on mine is processible with dark and other offset bias frames.
I don't use live view and keep my veiw screen turned off.
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