Andrew Reid

It's a good summary in the video. It isn't the 30 mins sold to us by Canon that is the real limitation. It's the 0 mins after a bit of light use in the menus. It's the biggest scandal I have ever known in the camera industry.

Absolutely. Canon fucked a great camera.

This is making Canon money?! That's news to me.

Any teardowns of the R6 out there yet?

The main problem is the PCB circuit board on top of the CPU, sandwiched between that and the back casing. It is utterly lunatic design or (more likely) on purpose. The main CPU should have a thermal pad on top and direct contact to the chassis. It is akin to Nvidia putting a second PCB on top of their graphics processor so it doesn't get into contact with the heat sink, and then telling gamers "sorry but your 2080 Ti only works for 20 mins of 4K Monster Hunter World then you have to go to 720p") I find it hard to believe any engineer would be happy with this layout. The simplicity of the physics, your average 10 year old would understand. Even I understand that if I don't put my Intel CPU in direct thermal contact with a heat sink in my PC, it gets too hot. So Canon can bleat on about using the magnesium alloy case as a heat sink all day long but they didn't implement it that way. The big question is why.

So going back to the actual internal design of the EOS R5... The questions Canon need to answer are: 1. Why is a circuit board sitting between the main CPU and back casing, blocking the heat from spreading away into the chassis 2. Of course, why is there no thermal conductive material on the CPU? 3. And why does the RAM thermal pad overlap onto the CPU, but not entirely cover it? (It seems to spread the heat from the RAM onto the CPU which is never a good idea). 4. Why does ice not cool the camera and speed up recovery time? The firmware recovery countdown timer is so slow to go back up and always the same. And indeed they will be asked via my contact at Canon UK. And I won't let up until they answer. If they don't answer, they have something to hide obviously.

Yes that much is clear I'm afraid. To be quite honest, I don't want to hear any more bullshit from you. So please take yourself off to a different forum.

Looks like our favourite Canon rep is pushing the line skipped 4K mode now! What year is it, 2015? How's this for an idea... You shoot JPEG 4 megapixel line skipped photos on your next shoot, and let's see you be the apologist then. "But 45 megapixel is so hard on the photoshop chain!"

That is evident. Ah so it's ok then. The whole release is hyped as an 8K pro video tool with 4k 120p but because Canon slipped some best-case scenario disclaimers into a CVP video, they're off the hook! The real overheating data should go something like this: 8K from cold - 20 min if you're lucky 8K about 10 mins into a shoot - 10 mins maximum 8K after a few stills - 5 mins 8K limit after a few stills and the Wifi menu - 0 mins! And the marketing should say something like: "Getting through any kind of video shoot, even filming your pet poodle for 10 mins with the powerful new EOS R5??... You'll be lucky!" That would be far more honest in my view. But yeah, no false advertising!! Did you actually READ any of the PR or Canon website? WHY DO PEOPLE NOT READ OR LEARN BASIC FACTS BEFORE SPOUTING OPINIONS??? “On the set of high-end productions such as commercials, dramas and documentaries, the EOS R5 is an ideal partner to the likes of Canon’s brand-new EOS C300 Mark III” “Set to redefine mirrorless, today’s update confirms the incredible recording capabilities of the EOS R5 including internal 8K RAW up to 29.97fps and suitability with high-end production workflows” “The EOS R5 boasts features seen only in high-end cinema cameras many times its price point and video features no other mirrorless camera on the market offers.” “Created as a direct response to growing demand for content creators to shoot both high-quality film and stills, the EOS R5 holds its own as the lead camera in productions – going over and above industry standards and achieving outstanding 8K.” Yeah sure. Sure it does.

Until there is a hack, or an official fix, it's game over really. This is a 4K pixel binning camera with nice ergonomics and good 10 bit codec. Think of it as the A7R IV but better codec and colour. A lot to like about that, but at the moment I can't really bring myself to talk about it, because the ethics of the overheating debacle are just so downright offensive it makes me never want to buy another Canon product ever again, let alone give one a good review while overlooking the highest quality 8K/4K modes. If Canon apologise and promise a fix, then I will happily use the EOS R5 in pixel binned mode until the better modes are working properly. But if they don't recall it or apologise, there will be fucking hell to pay from their customers and quite rightly so! It isn't the screen or EVF creating the problematic heat, it's the processing required to show the image on it... or so Canon has us believing... I think it's all very fishy and the more I dive into it, the weirder it gets.

Adrian here is the ultimate proof that people are blinkered idiots, that live under rocks. They miss long term trends and they even miss how millions of people use cameras differently to how they do. As for professional camera for video... I refer you to the famous Canon EOS R5 marketing and PR statements! https://www.eoshd.com/news/opinion-on-dpreviews-canon-eos-r5-overheating-test-in-4k/ Even Richard Butler at DPReview didn't absorb or register the Canon statements about professional video and cinematography use. It's unbelievable it really is. Why is the world so utterly full of chinless wonders who wander around the planet with their eyes half shut??

This should be the new Canon slogan. "And if you can get any video with this camera, its a bonus." Let's see how many sales that gets them vs 8K RAW!

No it isn't. You're just making excuses now for not seeing it as it really is, and from the perspective of a video shooter to whom Canon is trying to sell this camera as "comfortable on a C300 III shoot" I'm guessing you didn't even read much of what Canon said about the camera and how they described it for professional video, did you? And at $4000 it isn't exactly a consumer camera.

This gives us all a clue as to why the faulty video capabilities don't bother you then But I bet you'd change your tune in an instant if it overheated on a stills shoot. Would you defend it for shooting only 100 frames in 45 megapixel mode? Then it shuts down and forces you to use JPEG only at 12 megapixels!? Get a grip man. It's unbelievable how lacking in empathy and objectivism some people are.

No, it isn't a matter of opinion actually. It's a matter of objective fact and you're wrong. Where does it say in the disclosure up-front that the camera overheats in the Wifi menu waiting for a connection? Where does it say that you only get 5 mins of 8K recording after leaving the camera turned on doing nothing for about 10-15 minutes? Where does it say that the recovery times are extremely long and that not even applying ice to the back of the camera or freezing the body speeds the process up? It's a completely baloney situation. Electronics do not need 1 hour to cool down enough to get back to normal performance. You do not have to leave your laptop for an hour if the Intel CPU is thermally throttled. These are not my opinions by the way and if you want you can go and educate yourself on the factual side of semiconductors. Is a specs sheet count as "an advert"? What about the product description at B&H? It is not an advert in the sense of Red Bull gives you wings. It is completely unethical to say it has certain specs, but it's defective if you try to use it that way.

Exactly, we pay the money for a product described a certain way and we expect it to work. Also, Canon used the spec sheet to generate a wave of positive hype and good publicity ahead of the pre-orders. Then they slipped us the shitty little note about limited recording times due to heat, and assumed we'd all accept it and go "ah, gotcha!" What kind of company is this? And why should I ever trust them again?? Yep, as I said in my article... You would not even build a budget PC with no thermal paste!! Yet Canon build a $4000 camera without it on the main CPU. It's fucking disgraceful.

This guy would make a great Canon rep. Honestly it is exactly this kind of attitude which is leading the company's reputation and profits into the gutter. They advertised the 8K all over the place and played heavily on the creative possibilities of it, even as a side-kick to a C300 III on a professional shoot. They made all sorts of claims as to how it performs and what it can do... Then when it turns out they're pretty much all a lie, people like you pop up defending them. It's completely maddening. Ask yourself the question Adrian. Do you find this ethical even in the slightest? Or are you happy to support misleading advertising? If I released a LUT that claimed to make your camera shoot 8K, but it didn't perform like that, would you back me up too? Or are you only backing up Canon because you work for them??!

You are wrong. I cannot legally advertise a product I've made as a professional cinematography camera, when it is in fact a banana. I cannot please my customers or make good business selling something as "8K capable" when it isn't. To say every company does it is just not true. In fact if they tried it, they'd be on wrong side of the law and wrong side of their customers. Can you imagine the fury if your iPhone started overheating 1 hour into the day and you had to turn it off for 30 mins? I am very baffled as to why you think Canon can get away something similar... because it's a camera. No, they advertised it a certain way, and even the late admission of heat limited recording times is misleading because of how the camera behaves 10-20 mins after being switched on, or 30 mins into a stills shoot.

The camera seems to completely ignore ambient temp It carries on ticking the clock down... 15 mins, 10 mins, 5 mins... This is after just 1m 3sec of 8K recording, the rest of the time the camera was sat idle in live-view (8K enabled in the menus). The video mode you enable in the menu seems to set the timer. And after that not even liquid nitrogen seems to make the counter go up. All seems very fishy to me. I was down to 5 mins after applying the ice. To the touch the camera felt like an iceberg from top to bottom. I even had it on a bag of frozen chips at one point, but realised the chips were melting and I wanted to eat them for dinner the next day.

Maybe I should shut up now and let DPReview take over. Let's see if they take a lead on this issue. If they don't, we know the score. Ah, in fact we already know the score so I needn't bother! And the fact that Jordan is an ex-salesman tells you a lot.

It is indeed. But for Canon to fix this they might have to admit they lied to their customers, which isn't a great look to be honest https://www.eoshd.com/news/chinese-user-modifies-canon-eos-r5-to-improve-heat-management-but-finds-artificial-firmware-time-limit/

Correction! "The ability" in terms of maybe for 10 mins, during the first hour of a shoot, but then after that no ability whatsoever to record high quality video. It's no excuse at all. Canon are using 8K RAW as a marketing trick to sell more cameras. Have a think if this kind of dishonesty is what you want to be seen to be defending. Even if customers come to terms with the fact that they have mis-sold to and lied to by Canon, and they come to terms with the pixel binned 4K 30p maximum capability for reliable shooting, the damage to trust in the brand is immeasurable. The very fact you are using an EOS R camera as a B-cam to C700 is how the R5 was sold to us, with Canon's press release at launch explicitly mentioning that the camera would be comfortable on C300 III productions as a high-end 8K RAW video capable camera, with oversampled 4K and 4K/60p/120fps. There is more to this than marketing. It may be that they are entirely blameless. It could be that the camera was supposed to work far better than it does and an unforeseen manufacturing problem or design issue held it back. There's all sorts you don't know and can only speculate at. Yeah, well as one of those reviewers, you can thank me. You should really read the main article before joining the forum with your BS fountain. I said I bought it solely for the purposes of reviewing, testing and finding out the truth first hand about the overheating issues. You can apologise to me in your next post or you can fuck back out the door, up to you. Great!! Leica50mm has the solution! Let's hear it then...

Thanks @androidlad This is the kind of post we need more of.

I'd like to know what's going on there.

Do you have anything constructive to offer or just more of this? Getting a bit bored of it now.