Canon 5D III turns off after 14 hours

[DWalla]

We’ve been tasked to shoot a couple weeks of time lapse photos. We have our 5D3 setup with external power and the auto-power off setting disabled. The camera is taking a still photo every 8 minutes. But the camera will only stay on for 14 hours before it automatically shuts down. Anyone have any ideas as to why this may be occurring?

[Waddizzle]

The camera could be overheating.  You need to observe it just prior to shutdown.

If you are taking a shot every 8 minutes, does the camera really need to be "woke" the entire time.  Typically a press on the shutter will wake a camera back up.  Have you considered using an external intervalometer?

[DWalla]

It is using an intervalometer. I forgot to mention that. I have checked the temperature and it seems well within the normal range.

[ebiggs1]

 I, too, would like to know why it has to be on the entire time instead of just when taking a shot. I suspect the internal temp has something to do wit it. But I have never tried this before. The camera itself will not feel hot most likely.