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Canon EOS Crop Sensor for HD
APS-C sensor cameras including the 80D, 70D, 7D Mk. II, 7D, EOS M and Rebel models for HD video recording.

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Old October 17th, 2010, 06:47 PM   #16
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Join Date: May 2010
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Originally Posted by Paul Frederick View Post
I wonder if it has something to do with the cards being used? Mine never overheats either. I use fast cards, 45Mbs minimum. If your buffer is constantly being used because the camera writes to the card slowly, then maybe that is adding to the heating issue?

Just a thought, no basis in actual tests...
Originally Posted by Travis Cossel View Post
I tend to doubt this, as I am using 60Mbs cards. Also, video recording on the 7D the amount of information transfer is not that high. Shooting RAW stills actually benefits more from the higher speed cards. Good thought, though.

I think the card type can in fact, if not exclusively, be at cause.

Another shooter was having his 550d overheating in 2 minutes at normal ambient temperatures until he replaced his memory card.

Here's the link, it might make you laugh. :)

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Old October 18th, 2010, 09:02 PM   #17
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I find that my 7D only overheats when the CF card is over 85% full. Otherwise no issues at all.
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Old October 28th, 2010, 02:12 AM   #18
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First time I used my 7D at an outdoor wedding, it overheats like crazy, despite standing under a shade. I had to switch off and on almost every 15 minutes, luckily it didn't die on me during the important parts.

Following that, strangely enough, it never overheats again. I thought the firmware update fixed it and I did upgrade my CF to a 60MB/s.

Although I haven't yet try it in the summer season here in Australia where the ambient temp is 30-40 deg C. Maybe I should prepare some of those ice packs now as I'm entering summer in a month time...
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Old November 1st, 2010, 12:21 AM   #19
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The latest firmware helped a lot and since updating it I have no heat warnings anymore. Before the update it happened mostly in 720/50p mode as if the camera had to "work harder" resulting in getting warm.


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