Bojan, yes, I guess it could slow the flip mirror down and cause an error. I thought about cleaning it all, perhaps with immersion in contact cleaner, but then that would also wash out all lubricants in the shutter and flip mirror. The oil looked very transparent, but the thermals in moving oil might cause distortion.
David. OK, yes, the manual states operation to 0 c, so maybe -10 might be possible.
OK, gents, its starting to look like a bad idea ;-)
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