Brett, Keith almost said it all. I'll add my 2 dimes:
There is only two possible K cameras and one necessary "treatment" for really cold temperature: a "winterized" MX or KX. Tecnicians in Quebec often have to prepare cameras for extreme cold temperature when people like biologists work outside during winter. They basically take out the grease when doing a CLA and they will only do this on focal plane mechanical bodies. The camera will work about as good, make a bit more noise I think (and, I guess, get used a bit faster) but who cares when it is the only way to know your speeds will be precise enough rather than totally off because of the grease. I keep one winterized KX because it is bigger and easier to grip with mittens than the MX. The LX is good at cold temperatures but don't have low mechanical speeds.
Andre
Furthermore, do keep in mind that very low temperature environmental conditions will stiffen any grease or oil present in the actual camera body you're taking.
So, just choosing a camera body by model name may not guarantee you operation as a sub-zero camera.
It all depends on how it was treated, and what sort of lube any repair person added to it during any CLA, or otherwise.
keith whaley
