6 ms·

Yeah I’m in awe that this is considered acceptable that the camera just can’t record video more than 20 minutes for all the money you pay.

chrismorgan 6y ago
20 minutes at 8K. At lower sizes, it’s not such a problem: https://en.wikipedia.org/wiki/Canon_EOS_R5#Overheating_issues https://en.wikipedia.org/wiki/Canon_EOS_R5#Overheating_issue...
- Triv888 6y ago
  but you probably can get a $100 camera that can do 4k videos (I got a 1080p video camera for $30 5 years ago)... I would expect a $4,000 camera to be able to do 8k reliably...
  - deleted 6y ago
    [deleted]
  - lhoff 6y ago
    The resolution is not everything. Compression and bitrate matters as well. No $100 Camera is able to handle that bitrate. Raw 8k results in 2.6 Gbps. That is not something that a small and low prower CPU can process. And thats what causing the heat. I checked for a 100€ 4k action cam and tried to find out the bitrate they use. I found none where it was specified but this one https://www.goxtreme-action-cams.com/de/goxtreme-manta-4k/ https://www.goxtreme-action-cams.com/de/goxtreme-manta-4k/ requires at least a U3 class SD card. That means 30MB/s so 240mbps. And thats what causing the heat. Canon could of course but a better cooler into the camera but that was either a economic decision to protect their professional camera gear, a a design decision to keep the case small or a mix of both.
    - Triv888 6y ago
      > The resolution is not everything. If you talk about 8k, 4k or 1080p, the only thing that matters is the resolution. Whatever resolution that is advertised should work.
      - chrismorgan 6y ago
        You are quite wrong, ignoring both the megapixel wars and how video encoding works. There are enormous trade-offs involved here, and one chip may produce files twice the size and half the quality of another chip even with the same sensor and lens—to say nothing of the variation possible in sensors and lenses! If I record 1080p on my Surface Book with its rear-facing camera, for example, it runs quite a bit hotter than a typical phone with very similar optics, but produces substantially better quality for a given bit rate—in doing rough visual comparison earlier this year, I estimated that it was producing obviously better results at a quarter of the file size, comparing it to a mid-range phone of a generation two or three years newer than it. Also the other aspect of resolution not being everything is the optics; my Sony α6100’s 1080p is miles ahead of most phones’ 1080p in quality, and I think there’s a high chance it’d be better than a $100 4K video camera’s 4K. In short, not all 1080p or 4K or 8K or whatever is created equal. One other thing to remember: all else being equal, 8K video will be consuming four times as much power and generating four times as much heat as 4K video, which will be consuming four times as much power and generating four times as much heat as 1080p video. (Of course, all else never is equal, but it’s a fair approximation, especially within the context of a single device; but when comparing between generations, as part of quadrupling the pixels pushed, they probably put more effort into efficiency to try to balance power and heat things out too.)
  - ksk 6y ago
    > I would expect a $4,000 camera to be able to do 8k reliably... It already is reliable for it's stated goals. Unlimited 8k recording is neither a stated feature nor a goal of this camera. If you peg a smartphone CPU at 100% the system firmware will throttle it down to a safe limit. This is no different. The R5 is a tiny full-frame weather-sealed camera that's designed to be hand held. Which other camera that is comparable does things better?
Rillen 6y ago
It is a camera for taking pictures. It is stated on their website. The main market for this camera is probalby not 8k video. Its also hard to determine if this is a real issue for canon or if its just an issue in a circle of people who are more vocal about it.
- Triv888 6y ago
  > Its also hard to determine if this is a real issue for canon or if its just an issue in a circle of people who are more vocal about it. he sure went through a lot of trouble if it was not a real problem (maybe he works for Nikon)
  - Rillen 6y ago
    He did it because it gave him, as a YouTuber, a great video camera for a very good price. It is a real problem. The questions is for whom? For the majority of canon R5 buyers? I doubt that.
    - SulfurHexaFluri 6y ago
      And even for a youtuber 4k 60fps is more than enough. How many people are watching youtube videos in 8k 60fps. How many people even have the internet speed for that let alone the monitor.
      - spuz 6y ago
        Not many but as Matt explains in his video, you can downsample the 8K footage to 4K to get higher detailed 4K. The same is often done with 4K to 1080p footage for the same reason.

chrismorgan 6y ago

20 minutes at 8K. At lower sizes, it’s not such a problem: https://en.wikipedia.org/wiki/Canon_EOS_R5#Overheating_issues https://en.wikipedia.org/wiki/Canon_EOS_R5#Overheating_issue...

Triv888 6y ago
but you probably can get a $100 camera that can do 4k videos (I got a 1080p video camera for $30 5 years ago)... I would expect a $4,000 camera to be able to do 8k reliably...
- deleted 6y ago
  [deleted]
- lhoff 6y ago
  The resolution is not everything. Compression and bitrate matters as well. No $100 Camera is able to handle that bitrate. Raw 8k results in 2.6 Gbps. That is not something that a small and low prower CPU can process. And thats what causing the heat. I checked for a 100€ 4k action cam and tried to find out the bitrate they use. I found none where it was specified but this one https://www.goxtreme-action-cams.com/de/goxtreme-manta-4k/ https://www.goxtreme-action-cams.com/de/goxtreme-manta-4k/ requires at least a U3 class SD card. That means 30MB/s so 240mbps. And thats what causing the heat. Canon could of course but a better cooler into the camera but that was either a economic decision to protect their professional camera gear, a a design decision to keep the case small or a mix of both.
  - Triv888 6y ago
    > The resolution is not everything. If you talk about 8k, 4k or 1080p, the only thing that matters is the resolution. Whatever resolution that is advertised should work.
    - chrismorgan 6y ago
      You are quite wrong, ignoring both the megapixel wars and how video encoding works. There are enormous trade-offs involved here, and one chip may produce files twice the size and half the quality of another chip even with the same sensor and lens—to say nothing of the variation possible in sensors and lenses! If I record 1080p on my Surface Book with its rear-facing camera, for example, it runs quite a bit hotter than a typical phone with very similar optics, but produces substantially better quality for a given bit rate—in doing rough visual comparison earlier this year, I estimated that it was producing obviously better results at a quarter of the file size, comparing it to a mid-range phone of a generation two or three years newer than it. Also the other aspect of resolution not being everything is the optics; my Sony α6100’s 1080p is miles ahead of most phones’ 1080p in quality, and I think there’s a high chance it’d be better than a $100 4K video camera’s 4K. In short, not all 1080p or 4K or 8K or whatever is created equal. One other thing to remember: all else being equal, 8K video will be consuming four times as much power and generating four times as much heat as 4K video, which will be consuming four times as much power and generating four times as much heat as 1080p video. (Of course, all else never is equal, but it’s a fair approximation, especially within the context of a single device; but when comparing between generations, as part of quadrupling the pixels pushed, they probably put more effort into efficiency to try to balance power and heat things out too.)
- ksk 6y ago
  > I would expect a $4,000 camera to be able to do 8k reliably... It already is reliable for it's stated goals. Unlimited 8k recording is neither a stated feature nor a goal of this camera. If you peg a smartphone CPU at 100% the system firmware will throttle it down to a safe limit. This is no different. The R5 is a tiny full-frame weather-sealed camera that's designed to be hand held. Which other camera that is comparable does things better?

Rillen 6y ago

It is a camera for taking pictures. It is stated on their website. The main market for this camera is probalby not 8k video. Its also hard to determine if this is a real issue for canon or if its just an issue in a circle of people who are more vocal about it.

Triv888 6y ago
> Its also hard to determine if this is a real issue for canon or if its just an issue in a circle of people who are more vocal about it. he sure went through a lot of trouble if it was not a real problem (maybe he works for Nikon)
- Rillen 6y ago
  He did it because it gave him, as a YouTuber, a great video camera for a very good price. It is a real problem. The questions is for whom? For the majority of canon R5 buyers? I doubt that.
  - SulfurHexaFluri 6y ago
    And even for a youtuber 4k 60fps is more than enough. How many people are watching youtube videos in 8k 60fps. How many people even have the internet speed for that let alone the monitor.
    - spuz 6y ago
      Not many but as Matt explains in his video, you can downsample the 8K footage to 4K to get higher detailed 4K. The same is often done with 4K to 1080p footage for the same reason.