Originally posted by Dan Rentea Condensation should be a thing to worry and take care about no matter the brand. Unfortunately, no Pentax, Canon, Nikon, Fuji camera is immune to condensation. My K-5 II was very close to get damaged by condensation a few years ago. That's one of the reasons I shoot with 2 bodies when I have to shoot outdoor in very cold weather and then I have to get back inside where is warm.
I agree, and I don't. Condensation is a thing to worry about. With a weather sealed body and lens, you can wipe down the camera and not overly worry about the condensation from seeping into the equipment. For sure, you don't want to break that weather seal by, for example, changing a lens until the camera is stabilized outside and inside. With non-weather sealed gear, you do have to worry about condensation seeping inside the gear even if you did wipe things dry.
And yes, two bodies is always safest - especially if a lens change is required.