Update: The Canon EOS R3 will be officially announced on June 29th

EOS 4 Life

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Sep 20, 2020
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In theory better iso performance and so increased DR. In reality the benefits of BSI are much bigger the smaller the sensor so the improvements in ISO performance and DR will be incremental not revolutionary.
BSI is a fancy way of saying that most of the electronics are on the side that does not get exposed to light.
It is counterintuitive to me because I think of the side that captures light as the front side.
With the electronics out of the way, there is less interference to the photosites which actually capture the image.
A stacked sensor has to be BSI.
Having extra layers blocking the photosites who not really be feasible.

The best-selling ILC in Japan last month was the EOS 250D / SL3, which launched 2 years ago. Is everyone buying all those obsolete cameras a moron? If not, who is? Yeah.
Rebel T7 was the best-selling in the USA the last time that I checked.
 

neuroanatomist

I post too Much on Here!!
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Yeah, I had to block
Yes, the forum blocking feature lets you automatically ignore people who counter your bogus claims with facts and data. It’s very useful for people who cannot admit when they’re wrong.
 
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EOS 4 Life

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So she deleted this off her Instagram... apparently forgot to delete from YouTube!

Maybe she did not get permission from MC Hammer.
YouTube would just demonetize the video and divert the ad revenue to him unless he requests it be taken down.
 

rbielefeld

EOS 90D
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Apr 22, 2015
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I think Canon will consider the R1 to be their Flagship professional sports camera as they've already stated that the R3 is not their flagship model and is not a replacement for the 1DXiii .
Canon will make a high resolution model based on the R5 but they won't call it R1 : perhaps R5S or R5SR and it may have 80-90mp.

I predict the R1 will have :
24mp stacked BSI sensor
40fps
dual Digic X processors
dual CF Express card slots
I think the R1 will be around 50mp given the Sony a1 and Nikon Z9 are/will be in that range. The R1 will have to directly compete with the a1 and Z9. However, I also think the R1 will have a variable resolution option, so you can shoot in lower res if that is what you want/need. With dual processors and a stacked BSI sensor a 50mp R1 will be able to do everything a 20mp 1DxIII can do and more and give the photographer more options in doing it. Just my opinion. We will see in a couple of years.
 
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EOS 4 Life

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So if the R3 is 31MP, that means the R1 must be 50MP?
Not if there is also an R5c.
I think R1 would have to be at least 60MP to differentiate.
I know R6 and 1DX Mark III have the same sensor but they are in different leagues.
 

PerKr

EOS 90D
Jul 11, 2018
140
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Liking these specs. Seems to fit my needs, most of them, in a main camera, like a glove. For anyone complaining about the resolution; do you remember when Nikon released the D700? At a time when FF went to 20+ MP they went back to 12MP and everyone loved it.

Thinking this also serves to test the waters with things like eye-controlled AF for the R1. Which will likely blow the competition away.

Too bad serious photography magazines died in favour of click-focused, mostly brand-biased, crap online but I'm still looking forward to reading the reviews.
 
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Bahrd

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Jun 30, 2013
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With the electronics out of the way, there is less interference to the photosites which actually capture the image.
Also, the electronics in the front-illuminated sensors needs to be shielded from light in order to work properly.
 
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EOS 4 Life

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Half of the people want double CF express and half want CF + SD.
Some people have it in their minds that both slots have to match no matter what.
Sony found a way to please both sides but they did so by choosing an inferior yet more expensive CF Express type.
 
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EOS 4 Life

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This is a professional grade camera, even the 1dxmiii was dual CF express. A sports action camera 30 fps where one card writes slower than the other? Make sense to you? If you can afford a 6k body you can afford another CF express card, they are much cheaper these days.
1) 1DX Mark II was a professional grade with 1 CFast and 11 CF Express Type B slot.
2) R3 is considered by Canon to be a prosumer camera like the R5 is.
 
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Finn

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Mar 6, 2021
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Half way on my calculation I realized 30.1MP is the same number of pixel on Eos R if it’s the number of effective pixels. So the crop for 1:1 4K will be 1.74 as Eos R, 1.17 crop for 6K raw and Natuve raw is 7K.
It has the R5 processor so I’m going to say it will offer at least 6K RAW with a small crop in Canon RAW Lite. For video shooters that is pretty exciting, imho. No other cameras are offering internal RAW besides RED Komodo in this price range.
Since it is a stacked sensor the readout will be fast, rolling shutter minimized, and the RAW image will probably look pretty damn good.

R3 shaping up to be an exciting camera. Finally a pro level video quality and features in a 1DX style body and mirrorless with tracking DPAF.
 

David - Sydney

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SDexpress continuous write speed will probably be as fast as any of your CFexpress cards or when Xsfering to a PC. Canon is on the memory card committee. They are fully aware of what will be happening in the memory card arena. There is only 4 manufacturer cards compatible and tested with Canon's CFexpress bus for high resolution video that wont give video recording flags. Basically a crap shoot. And they arent sold locally at Best Buy either
And lets not even debate the card reader crap. Companies struggling to sell cameras and then consumers have to search for card readers.

SD Express spec 8 can handle 4gb/s ie the same as 4 PCIe lanes. CFe Type A = 1GB/s, Type B = 2GB/s, Type C (much bigger ) = 4GB/s.... but Lexar's write speed for the first SD Express card is 400MB/s to be released in 2022.

So yes, SD Express can be fast but there aren't controllers and cards that will be equivalent for a long time. SD Express will also not be available locally except in specialist stores.

There are 4 officially supported OEMs for Type B but users report that the smaller Sandisk also work. Only Sony produces the CFe Type A and canon would be crazy to rely on Sony memory for a Canon flagship camera.

The question is really what speed is needed and what heat is generated? Canon RAW light options can reduce the bit rate by ~half. Sony got their 4:2:0 oversampled 8K down to 400MB/s so they didn't need CFe Type B.

So what choice is there for Canon? Dual CFe Type B would clearly work and there should be space in the R3 body for them if they wanted to include them. UHS-II SD is the only other choice but they are significantly slower than CFe B and slightly cheaper now for the same capacity and could become cheaper again over time.
 
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David - Sydney

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Half way on my calculation I realized 30.1MP is the same number of pixel on Eos R if it’s the number of effective pixels. So the crop for 1:1 4K will be 1.74 as Eos R, 1.17 crop for 6K raw and Natuve raw is 7K.
Hopefully the lower resolutions will be available oversampled without overheating times. Will Canon remove the 30 minute limit??
 

David - Sydney

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Best is to have both card types for each slots! Like in the Sony A1! This is the best!
Only if you want to record lower bit rate high-res video. Canon's 8K raw is ~2600Mb/s and only CFe Type B can handle that. Canon's lowest 8K bit rate after the latest firmware is 8K UHD IPB light @ 340MB/s.
Sony's 8K recording speed is ~400MB/s
Can you tell the difference? That is the real question and if not then Canon has over specified their bus/card system and created the overheating issues that were pounced on by detractors.
 
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David - Sydney

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Some people have it in their minds that both slots have to match no matter what.
Sony found a way to please both sides but they did so by choosing an inferior yet more expensive CF Express type.
With one supplier and has supply difficulties. The UHS-II/Type A combined card slot is a nice design though.
 
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Finn

EOS M6 Mark II
Mar 6, 2021
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BMPCC 4K, 6K, and 6K Pro.
URSA Mini 4.6K Pro
C200
1DX Mark III
multiple ZCAM E2 models
Ok, yes. I should have been more specific. Those cameras are great, especially Blackmagic for the price. But R3 offers excellent AF and weather ceiling in one body without need for rigging.

1DXIII is a DSLR photo camera. I don’t like to be stuck looking at a small screen on the back for video.
 
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EOS 4 Life

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Only if you want to record lower bit rate high-res video. Canon's 8K raw is ~2600MB/s firehose and only CFe Type B can handle that. Canon's lowest 8K bit rate after the latest firmware is 8K UHD IPB light @ 340MB/s.
Sony's 8K recording speed is ~400MB/s
Can you tell the difference? That is the real question and if not then Canon has over specified their bus/card system and created the overheating issues that were pounced on by detractors.
The bitrate discussions fascinate me.
I used to be able to tell who came from film and who came from video.
The video folks would complain about the cost of media because they were used to paying next to nothing and favored lower bit rates.
The film people could not believe how cheap the media was compared to film so they favored higher bit rates.
Now we have people who never used either and are kind of in the middle.
Canon really threw the kitchen sink at the R5 and it goes from IBP Light to full Canon RAW.
It does not surprise me when people buy inexpensive cameras and focus on the cost of media but I wanted to slap everyone who bought $80K US RED cameras and complained about the cost of RED mags.
I only didn't because I suspect they would not cheap out on lawyers.
 
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reef58

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It's really not that, because all of that stuff got better, cheaper and faster too. You're not going to win this one dude.

Let's be truthful here. You're arguing for lack of capability for your own personal needs and desires. Understandable, but if they're only exist one camera, is a bit selfish. Or at least very short-sighted to say the least

Yeah, I had to block some morons here who claim that the EF-mount bodies and lenses are still for sale therefore they're not obsolete. Since when has a viable camera line not had a single new product for three years straight, while another camera line by the same manufacturer has had five bodies and a dozen lenses?

In many ways even the R beat the 1Dx3, even. Much less the R3.
Having owned both I can say for me the R didn't have anything over the 1DX3. It is smaller and lighter. If you like shooting video through the viewfinder that is a check for the R but every other category the 1dx3 is superior, but I am sure you will assume I am making this up since it can't possibly be true.
 
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