I went out and shot the Super moon eclipse back in October. By camera and lens ended up wetter than either of those two cameras in the pictures, thanks to the dew forming on them. Ended up wiping them off with a microfiber cloth I had in the camera bag. It being dark, and using a remote release I didn't really notice until I finished. That was a 50D/BG-E2N Sigma 150-600 C. Both continue to work fine.