7D Review Video Note

He says it shuts down to avoid overheating.
I think it's to save battery acutally. If you have live view on and you are not recording or setting dials, it will eventually turn off and not just stay on till the battery drains while not doing anything.
 
>I think it's to save battery acutally. If you have live view on and you are not recording or setting dials, it will eventually turn off

Could be also battery. But also heat comes into my mind. If record voice in a video you react live to the event (here shutting off). Clearly it was working as designed and not problem.
 
The best thing about this video is it illustrated to everyone why AGC (auto gain control) sucks. I know he is filming with the GH1 but both the GH1 and the 7D have in built AGC.

For those that are learning about audio and the horror that is AGC – listen to the background hiss behind Uwe's voice. When he is talking the hiss fades away, when he is quiet the hiss comes back.

As for the shut off, I agree with Cola, it's to save battery and nothing to do with heat. There should be a setting somehwere so it doesn't shut off. The GH1 is a similar cam and I have done 1 hour takes without any heat issue. The lack of live histograms is surprising. Uwe are you sure it's not hidden away in the menu's somewhere?
 
J Davis said:
...The lack of live histograms is surprising...
Click to expand...

Indeed, i would have betted that the 7d displays a histogram before shooting. This is what dpreview says:

"LCD Live view • Live TTL display of scene from CMOS image sensor
• 100% frame coverage
• 30 fps frame rate
• Real-time evaluative metering using CMOS image sensor
• Best view or exposure simulation
• Silent mode
• Grid optional (x2)
• Magnify optional (5x or 10x at AF point)
• Three AF modes - Live mode/Quick mode/Face Detection
• Histogram
• Remote live view using EOS Utility 2.0 (via USB or WiFi/Ethernet using WFT)"


But, of course, perhaps it´s only available in photo mode...?
 
Uwe,

How long did it take for the camera to shut down due to overheating/battery? How much of a problem do you think this would cause on set?
 
I don't have the camera, but based on the manual, it seems like:

  • The histogram seems to be only displayed on playback (definitely for stills, not positive for video but on my Canon SD880 it does show the histogram on movie playback for a specific frame when you pause the clip and press the DISP button)
  • The powering down might be due to the AUTO POWER OFF being set. The defaults appears to be auto power off after 1 min. You can turn this off or change it to a handful of other times.
  • On page 159 the manual warns you about overheating the camera if you shoot movies for a long time. This can degrade the image quality. If you shoot under direct sunlight or high-temperature conditions, a high internal temperature icon may appear. If you continue to shoot with this icon on and the internal temperature rises further, the movie shooting will stop automatically. If this happens, you will not be able to shoot again until the camera's internal temperature decreases. Turn off the power and let the camera rest for a while.
 
If there is a histogram during photo mode, in live view, then that is more than enough. Not having it active while you're recording isn't the worst thing in the world. Sweet that there even is a histogram that we can use to judge along with the lcd!
 
There was a post a while ago about using incidence light meters.

If you don't like flipping between one mode and the other, this is the perfect place use one.
 
On page 159 the manual warns you about overheating the camera if you shoot movies for a long time. This can degrade the image quality. If you shoot under direct sunlight or high-temperature conditions, a high internal temperature icon may appear. If you continue to shoot with this icon on and the internal temperature rises further, the movie shooting will stop automatically. If this happens, you will not be able to shoot again until the camera's internal temperature decreases. Turn off the power and let the camera rest for a while.


Hmm...
I'm trying to convince a producer to shoot our short on this camera rather than an HPX300, but I'm wondering if something like this will come back to bite me in the ass on set. Is this the same problem with the 5DmkII? Anybody have any similar problems on set? Or am I worried about nothing?
 
>Not having it active while you're recording isn't the worst thing in the world.

True. But not sure who designed the switch from Live View to Video :-).

Here the GH1 shines because everything is Live View (the GH1 is designed for Live View only). But then if you shoot action stills the 7D AF and fps is so much better.

As a stills camera I like the 7D a lot. As video camera it has good image quality but the handling is not nearly as good as the GH1
 
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