More features and specifications for the Canon EOS R3 have emerged

rick1

EOS M50
Sep 8, 2016
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Hmmm if they are released within the same year they are generally considered to be of the same generation. Further proof is that a camera released at the same time as the R5, the R6 also uses the 1DX iii sensor. In my opinion it is very reasonable to compare
the 1DX iii is basically just an enhanced version of the 1Dx2, the R5 is not just an enhanced version of the 5D, it is a completely different generation of camera. Hence the new naming convention for this generation of cameras.
 
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Aug 7, 2018
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Because he doesn't understand that 100% magnification is not the same enlargement ratio for a high MP image as it is for a low MP image. When you enlarge a smaller image pixel to the size of a screen pixel, you're magnifying more than when you enlarge a larger image pixel to the same sized screen pixel.

Some folks apparently can't wrap their mind around the fact that they're looking at a 36x24 inch enlargement when viewing 8.2MP images on a 24" FHD monitor with a pixel pitch of 96 ppi, and they're looking at an 85x57 enlargement when they're viewing a 45MP image at 100% on the same monitor.
I understand what you mean. Of course a 45MP image is larger that an 8.2MP image at 100%, but a pixel still is a pixel. It only is larger because you have more of those pixels. Just look at the 108 megapixel photos that many smartphone cameras can now produce. Then you understand the problems I have with many pixels. The main advantage of a full frame camera for me are the larger pixels on the sensor. With a high resolution you bascically throw away that big advantage.

8K video has the same problems. 4K already is enough for quite a large screen. 8K just needs more drive space in most situations.
 
Feb 15, 2020
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the 1DX iii is basically just an enhanced version of the 1Dx2, the R5 is not just an enhanced version of the 5D, it is a completely different generation of camera. Hence the new naming convention for this generation of cameras.
I get where you’re coming from. But of course the difference between 5D and R5 is more dramatic because it is the first 5 series mirrorless - they had to flex their muscles given the relative performance of other mirrorless cameras.

I do however disagree that the 1DX iii is just an enhanced 1DX ii - it has a completely new chip (digit x) and the sensor is also a new ground up design (just mega pixel count is the same). For me the 1DX iii has probably has just as many, if not more upgrades then when comparing 5D ii vs. 5D iii or 6D vs 6D ii.

My point: historically speaking It is actually not very common for a new generation of camera to be so dramatically different like the R5 is to 5D. So yes I would consider 1DX iii a completely new generation over a 1DX ii. Of course that is also how canon has marketed the newer camera.

Further reading on 1DX ii vs 1DX iii https://www.canon-europe.com/pro/stories/eos-1d-x-mark-iii-vs-mark-ii/
 
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Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
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You can't compare the R5 to the 1Dx, they are a completely different generation of camera. The R3 and R1 will be the same generation as the R5

The R5 is the current 5-Series camera and was released in 2020.
The 1D X Mark III is the current 1-Series and was released in 2020.

They are both current products that were released within four months of one another.

It's perfectly legitimate to compare them to each other. They're both the most current of the 1-Series and 5-Series cameras.

Besides that, the 5Ds R is still a 50 MP camera and has been in the catalog since 2015. It is also a 5-Series camera that was introduced in the same generation with the 5D Mark IV. If you're willing to compare the 1D X Mark III released in 2020 to the 5D Mark IV released in 2016, the same year as the 1D Mark II (the PREVIOUS generation of the 1-Series), then you must be willing to compare the 1D X Mark III to the 5Ds R as well as the 5D Mark IV.

The 1D X Mark III only has 40% as many pixels as the 5Ds R. Both are DSLRs.
 

Michael Clark

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I mispoke, compare the 1dxii to 5dmiv. It has the exact ratio of pixels as I was referring to. The 1dx has 66% of the mp as the 5d

You mispoke (sic)?

You also conveniently ignore the 5Ds and 5Ds R that are 5-series cameras of the same generation as the 1D X Mark II and 5D Mark IV.

I don't know what a 1dx is. I've never seen one, and there's no model ever listed by Canon anywhere named the 1dx. Do you mean the 18 MP 1D X (2012)? Or perhaps the 20 MP 1D X Mark II (2016)? Or maybe the 20 MP 1D X Mark III (2020)?

The 1D X Mark II has 20 MP and was offered from 2016 until 2020.
The 5D S and 5Ds R have 50MP and were offered from 2015 until 2021.
The 5D S and 5Ds R were current 5-Series cameras the ENTIRE time the 1D X Mark II was in the catalog.
They're the same generation of camera.
The 5Ds and 5Ds R are 5-series cameras of the same generation as the 1D X Mark II.

Therefore, the 1D X Mark II DOES NOT have 66% of the megapixels of the highest resolution 5- series cameras of the same generation.
The 1D X Mark II has 40% of the megapixels that the highest resolution 5-Series camera of the same generation had.
 
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Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
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Who says the buffer will get full?
This is not Sony we are talking about.
I get that this s not the R1 but Canon is going hard at 30 FPS.
If there is any kind of limit reached then even I will call BS on them.
The usual cabal of YouTube critics is just waiting for Canon to screw up.

If the bus speed of the CFExpress card is reduced to the maximum speed of the SD card bus, you can bet your behind that the buffer will get full when trying to shoot at full resolution at 30 fps, even if the camera is only 20 MP.

Have you ever used a 7D Mark II or a 5D Mark IV? When the SD card is being written to, the CF card bus also slows down to the maximum speed of the SD card bus.

With the 5D Mark IV the fastest CF cards write at about 112 MB/s.
With the 5D Mark IV the fastest SD cards write at about 79 MB/s.
When both cards are being written to, the CF card bus also slows down to 79 MB/s.
I've personally tested this with my own 5D Mark IV.

With the 7D Mark II the fastest CF cards write at about 103 MB/s.
With the 7D Mark II the fastest SD cards write at about 74 MB/s.
When both cards are being written to, the CF cards bus also slows down to 74 MB/s.
I've personally tested this with my own 7D Mark II.
 
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Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
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the 1DX iii is basically just an enhanced version of the 1Dx2, the R5 is not just an enhanced version of the 5D, it is a completely different generation of camera. Hence the new naming convention for this generation of cameras.

The 1D X Mark III has many features that the 1D X Mark II lacks. When used in Live View mode it has many of the features of the R5, R6, and R.

Further, the PDAF sensor used when shooting via the OVF of the 1D X Mark III is unlike any dedicated PDAF sensor array that has come before in a Canon DSLR. Rather than having line sensors like all other Canon DSLR OVF based PDAF sensors have (or had), the 1D X Mark III has an AF sensor that is a miniature imaging sensor with a 3:2 aspect ratio. It's doing AF via the OVF that is equivalent to Live View that does AF like a mirrorless.

Have you ever even held a 5D Mark III, 5D Mark IV, 1D X Mark II, or 1D X Mark III? Much less an R5, R6, or even EOS R?
 

Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
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I understand what you mean. Of course a 45MP image is larger that an 8.2MP image at 100%, but a pixel still is a pixel. It only is larger because you have more of those pixels. Just look at the 108 megapixel photos that many smartphone cameras can now produce. Then you understand the problems I have with many pixels. The main advantage of a full frame camera for me are the larger pixels on the sensor. With a high resolution you bascically throw away that big advantage.

8K video has the same problems. 4K already is enough for quite a large screen. 8K just needs more drive space in most situations.

No, a pixel is not still a pixel. The 45 MP sensor on the R5 collects the same total amount of light as the 20 MP sensors on the 1D X Mark III and R6. When displayed at the same enlargement ratio, they exhibit very similar signal to noise characteristics. The time when higher density sensors performed worse at the same enlargement ratios went away about a decade ago when gapless sensors were introduced.
 
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rick1

EOS M50
Sep 8, 2016
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The 1D X Mark III has many features that the 1D X Mark II lacks. When used in Live View mode it has many of the features of the R5, R6, and R.

Further, the PDAF sensor used when shooting via the OVF of the 1D X Mark III is unlike any dedicated PDAF sensor array that has come before in a Canon DSLR. Rather than having line sensors like all other Canon DSLR OVF based PDAF sensors have (or had), the 1D X Mark III has an AF sensor that is a miniature imaging sensor with a 3:2 aspect ratio. It's doing AF via the OVF that is equivalent to Live View that does AF like a mirrorless.

Have you ever even held a 5D Mark III, 5D Mark IV, 1D X Mark II, or 1D X Mark III? Much less an R5, R6, or even EOS R?
Yes I own/owned a 1DXiii, 5Div, 5D3, 7D, R5. Are you really trying to compare a mirrorless camera to an old dlsr and trying to say they are the same generation of camera?
 
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rick1

EOS M50
Sep 8, 2016
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You mispoke (sic)?

You also conveniently ignore the 5Ds and 5Ds R that are 5-series cameras of the same generation as the 1D X Mark II and 5D Mark IV.

I don't know what a 1dx is. I've never seen one, and there's no model ever listed by Canon anywhere named the 1dx. Do you mean the 18 MP 1D X (2012)? Or perhaps the 20 MP 1D X Mark II (2016)? Or maybe the 20 MP 1D X Mark III (2020)?

The 1D X Mark II has 20 MP and was offered from 2016 until 2020.
The 5D S and 5Ds R have 50MP and were offered from 2015 until 2021.
The 5D S and 5Ds R were current 5-Series cameras the ENTIRE time the 1D X Mark II was in the catalog.
They're the same generation of camera.
The 5Ds and 5Ds R are 5-series cameras of the same generation as the 1D X Mark II.

Therefore, the 1D X Mark II DOES NOT have 66% of the megapixels of the highest resolution 5- series cameras of the same generation.
The 1D X Mark II has 40% of the megapixels that the highest resolution 5-Series camera of the same generation had.
are you seriously trying to throw a specialty astrology camera into the mix? LOL
 

privatebydesign

I post too Much on Here!!
CR Pro
Jan 29, 2011
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Yes I own/owned a 1DXiii, 5Div, 5D3, 7D, R5. Are you really trying to compare a mirrorless camera to an old dlsr and trying to say they are the same generation of camera?
Generation is a measure of age, ergo if they are the same age they are the same generation. What is not in the 1DX III in Live View that is in the R5? There are specification differences but the technology is largely the same.
 
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Michael Clark

Now we see through a glass, darkly...
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Interesting but these are amateurs too so the pro sports shooters are very out numbered.
These amateur sports shooters would probably buy a good crop sensor camera too as it gives more reach without having to buy crazy expensive big white lenses
Well, there are often pros (as in full-time photographers who pay their bills with it, mostly PJs) at many of the larger high school events as well. There are also pros at pretty much all of the college events that don't have a lot of amateurs, unless you count photography/journalism students currently attending the schools involved.
 
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EOS 4 Life

EOS R
Sep 20, 2020
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If the bus speed of the CFExpress card is reduced to the maximum speed of the SD card bus, you can bet your behind that the buffer will get full when trying to shoot at full resolution at 30 fps, even if the camera is only 20 MP.
There are 300 MBS V90 SD cards.
10 MB jpegs seem plausible.
(There are higher speed V90s nut they are not officially supported)
 

Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
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There are 300 MBS V90 SD cards.
10 MB jpegs seem plausible.
(There are higher speed V90s nut they are not officially supported)

Only if the camera has a UHS-II capable bus do the faster cards make any difference. The 5D Mark IV and 7D Mark II run at UHS-I speeds, not UHS-II. Some UHS-II cards will default to 100 MB/s when used on a UHS-I bus, but many will default to 50 MB/s, which is slower than many UHS-I cards.

Current CFExpress cards have a maximum theoretical performance of 2000 MB/s. Plenty of current cards are rated at 1500 MB/s write speed, and pedestrian cards can write at 1200 MB/s.

2000 MB/s is SEVEN times faster than V90 SD cards.

Even if the R3 has an UHS-II connection, which I full expect it to, it's still running at a fraction of the speed of the CFExpress slot's capability when only using the CFExpress slot.

If you don't think the camera will slow down if you cut the CFExpress bus speed from even 1200 MB/s to 300 MB/s...
 

AEWest

EOS RP
Jan 30, 2020
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I do expect that the R3 will be introduced soon. Jakki Moores just showed it off on Twitter for the G7 meeting. And it has a lens attached suggesting this is a full working model. With Gordon Laing's video, we had no idea if it worked or not.
 

privatebydesign

I post too Much on Here!!
CR Pro
Jan 29, 2011
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I do expect that the R3 will be introduced soon. Jakki Moores just showed it off on Twitter for the G7 meeting. And it has a lens attached suggesting this is a full working model. With Gordon Laing's video, we had no idea if it worked or not.
Good catch.
From Jakki’s Twitter. https://twitter.com/JakkiMoores


5F1EA2B0-04FC-44CE-9A32-5CE9D2064EFB.jpeg
 
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