Originally posted by johnmflores Canon 5Diii has a 29:59 recording limit and are susceptible to overheating as well. It's really only an issue when shooting long events. Short stuff, particularly the action-type things that you do, should not be an issue. Get a backup body and have it ready to go if you are shooting in extreme heat.
I understand that, and I have no problem with shoot time limits. But the way the description made it sound, it will also just shut itself at any time if it think it's getting too hot. It's one thing to have to plan around a known time limit, it's another thing if it just shuts off half way through a take and you didn't know it was coming.
You'd be surprised (I was) how easy it is to rack up some really long takes shooting adventure stuff, especially climbing. People don't move that fast, and when someone is going for a hard attempt, you don't want to miss anything, so it's easiest to just let it roll. You can strategically cut and restart when there's a break in the action, which helps with clip length; but that doesn't really help with heat, since the sensor is only off for a few seconds.
I know all DSLRs have a heat issue, so I'm not knocking the K-3 for that. Just the notion of it randomly deciding to shut itself off, scares me a little.