Long story short, I'm doing something related to multiple exposures, and to avoid bumping the camera and changing its orientation, I decided to just leave it switched on. It's plugged into the wall with a DC adapter. Is there any limit to how long a 5D3 can be left sitting in the on position before it shuts itself off or otherwise wigs out due to a software glitch or some internal chip timer resetting? (Most likely will leave it like that for a few days, but I'm curious about whether or not it could do that for weeks or months.) Obviously I've disabled the "auto power off" setting.