D7000 Sensor? Same issues as A55?

I've never used the A55, nor do I have any technical knowledge about this topic what-so-ever. With that said, it seems logical to me that as far as heat generation goes that it would be the processors/encoders that produce heat with prolonged usage. Right?
 
ethan cooper said:
I've never used the A55, nor do I have any technical knowledge about this topic what-so-ever. With that said, it seems logical to me that as far as heat generation goes that it would be the processors/encoders that produce heat with prolonged usage. Right?
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Generally, no. Most modern LSI (processor+other logic) produce very small amount of heat.

Sensor produce much more heat.

As for 30min limit - it depends from heaters used for sensor. Nikon must be much better due to fixed sensor without any IS.
 
This is covered in Chase Jarvis's blog:

http://blog.chasejarvis.com/blog/2010/09/nikon-d7000/

...we did see our prototype give the temperature warning 4-5 times. This was on the camera that was shooting behind the scenes video in Palm Springs and Joshua Tree. It was exposed to very heavy use in temperatures up to 115, so I’d say it was sort of a worst case scenario. We had no such issues when shooting any of the other cameras in that environment or while shooting the short film in Seattle.

They went on to say that they did shoot a 20 min clip without incident. It sounds like it does better than the reported issues with the A55.
 
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Seems like perhaps it's as Vitaliy says -- the lack of IS on the D7000 seems to align with the limitations of the A55.
 
The Sony will have more of an issue with over heating because the sensor is always in live view, typically while in use.
 
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