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New Contributor
Posts: 1
Registered: ‎06-02-2015

My 5dmkiii suddenly shut down while video recording


i noticed that my 5d mkiii is suddenly shut down while video recording and after that i have to change battery then after it works.... but till that it did't work what is possibel cause.... i just bought 1 year ago....

Posts: 12,708
Registered: ‎12-07-2012

Re: My 5dmkiii suddenly shut down while video recording

[ Edited ]

A bad battery.  The camera got too hot.  You excedded the 29 min or 4gig limit.  A possible few.

EOS 1DX and 1D Mk IV and several lenses!
Esteemed Contributor
Posts: 3,834
Registered: ‎06-11-2013

Re: My 5dmkiii suddenly shut down while video recording

If the camera gets too hot due to prolonged use of live-view or video shooting, you get an icon of a thermometer -- the icon is white.  You should stop shooting and let the camera cool down.  


If you keep shooting, you will eventually get a red thermometer icon and it may start blinking... if you ignore this the camera will shut down on its own (and then you have to let it cool down.)


If the camera freezes and the only way to unfreeze it is by ejecting the battery then it sounds like something crashed the firmware (ejecting and re-inserting the battery forces the camera to reboot -- the power switch is technically a software switch so if the camera has crashed, toggling the power switch will not be enough to reset it, but ejecting and re-inserting a battery will reset it.)    


Whenever anyone has problems with cameras shutting down while shooting video I usually suspect a bad memory card.


Make sure you have a high quality card (don't skimp on cards -- especially if you want to shoot video.  I use Sandisk Extreme Pro cards (yes, they are expesnsive.))   


Perform a "low level" format in the camera.  (don't format the card in the computer.)


Tim Campbell
5D III, 5D IV, 60Da
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