Is September 14 the day we finally get the official Canon EOS R3 announcement?

You can make huge high quality prints from a 12mp FF camera.
What you might regard as "high quality" depends on quite a lot of factors, including size of print, viewing distance and subject matter. I've seen excellent portraits and sports shots from low res cameras, but for subjects that contain a lot of fine detail, more megapixels is generally a good thing.

I freely admit to being a pixel peeper - I view my photos at 800% and press my nose up against my 5K monitor when I'm editing them...

I also often need to crop fairly heavily when editing wildlife photos, so I like a lot of pixels!

Technical quality is very much secondary to subject matter, lighting, composition etc which are what distinguish a great photo from a mediocre one, but I like, as much as I can manage, to have really sharp, finely detailed and noise-free shots. All of us have different thresholds of acceptability, and judge images in different ways. If someone is happy with 12mp, who am I to argue?
 
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I freely admit to being a pixel peeper - I view my photos at 800% and press my nose up against my 5K monitor when I'm editing them...

I ……….
I’ve been using 5DS cameras for over five years now and the conclusion that I’ve come to is that viewing an image at 800% on a 5K monitor is one of the few instances where the 50mp makes sense. This assumes of course, that viewing an image at 800% on a 5K monitor makes any sense in the first place.
 
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On a 5K iMac you have to view at 200% or larger in Photoshop to pixel peep.
Yes I know, and this is where, I believe, the desire for higher and higher mp comes from, not from the desire to actually output high quality images. Hence why many professional photographers aren’t so hung up on very high mp.
 
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Yes I know, and this is where, I believe, the desire for higher and higher mp comes from, not from the desire to actually output high quality images. Hence why many professional photographers aren’t so hung up on very high mp.
I wonder who Canon designed the R3 for…I suspect their target market wasn’t people who routinely view images at 800% with their noses pressed to a 5K monitor.
 
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I wonder who Canon designed the R3 for…I suspect their target market wasn’t people who routinely view images at 800% with their noses pressed to a 5K monitor.
I edit my 30MP shots from the 5DMkiv the same way...

I'm not in the market for an R3 or R1, and wouldn't be even if they had 100MP, as I don't want a gripped camera. R5 has a few shortcomings, but I can't think of anything else, regardless of brand or cost, that I'd choose in preference.
 
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Yes I know, and this is where, I believe, the desire for higher and higher mp comes from, not from the desire to actually output high quality images. Hence why many professional photographers aren’t so hung up on very high mp.
The desire for higher MP initially comes from all the advertising hype. It often convinces people that they must have features that they don't really need. I bought my 5DS primarily because of the increased ability to crop, which is valuable for wildlife photography and allows the use of shorter, lighter and less expensive lenses.

There are some negative aspects to high MP of course - blur from camera shake and subject movement is harder to control as MP gets higher - and the noise at ISO 800 or above on the old 5DS was pretty awful. For those reasons I shot the bulk of my images with the 30MP 5DMkiv.

My experience with the latter taught me that I wouldn't personally be happy with less than 30MP for wildlife photography, although it was fine for landscapes and sports. For various reasons (eye-AF, silent shutter, faster burst speed), I decided to abandon the DSLR boat and get a FF MILC. The choice for me was between the Sony a7Riv and the Canon R5. I chose the R5 and it suits my style of working very well.
 
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The actual minimum figure I've seen quoted to make 8K possible is 33.17mp.


I think this would be a figure that pleased most camps. The sports guts who prefer 24mp would probably be content to settle for 33mp, as the file sizes would still be quite small. Those who are still convinced that "less is better" regarding DR and noise would also probably be OK with 33mp, as would the 8K guys. And although I personally would prefer 45mp or thereabouts, most of the hi-res seekers would also probably find 33mp an acceptable compromise.

Note the multiple use of "I think" and "probably", to keep a certain poster happy that I'm just expressing an opinion ;)
Don't worry about it. I've been accused of making up facts when expressing my opinion here.
Continue your contributions to this forum, and not worry over bullying behaviour.
 
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Can’t wait for this camera to be announced, ordered and in my hands, such excitement.

An unknown price for a photo centric unconfirmed MP count camera that will probably be released in 2021. Imagine all the angst that seems to cause some people.
 
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24mpx at 30 fps generates only 0.45Gb CRAW files or 0.2Gb jpegs per second. A factor of two is the same as going from 24mpx to 48mpx, which is what Canon has achieved with its CRAW technology that appears to have close to zero effect on IQ.
Okay, still huge file tho, considering the discipline that require high fps demand you to stay out for long time
If people buy a high megapixel camera, but prefer smaller files, they have two options. Either they can shoot 45-50 megapixel JPEGs which will fly at lightning speed, or they can select a lower resolution mode. Canon models (and most other brands) have allowed the user to choose from 3 different (uncropped and uncompressed) RAW resolutions for donkey's years.

The choice is between buying a 24MP camera, and being stuck with a maximum of 24MP, with consequent disadvantages when it comes to cropping.
... or buying a 50MP camera that offers a choice of shooting 50MP, 25MP or 12MP (these figures are not precise - they'll vary from model to model) simply by twiddling a dial or selecting the appropriate option in the menu.

I can absolutely understand why someone would be happy with a 24MP camera, or even a 12MP camera, if all they wanted was to post images on the internet, shoot video, or to make smallish prints. But there will nearly always be situations when you can't get close enough or have the wrong lens on the camera when an amazing photo opportunity arises, and then the cropping advantages of a high MP camera really pay off in a big way. For wildlife photography in particular, the ability to crop tightly and still get a really high quality image is a huge advantage. I could shoot on a 400mm F2.8, crop the image to 600mm equivalent, and still have an image as good or better than I'd get with a 600mm F4, at a fraction of the cost and weight.

As far as I can see, there are no negative aspects to buying a high megapixel body, other than the greater initial cost. Bigger sensors have lower yield rates in manufacturing, and they require more powerful processors, which pushes up the price of the cameras. Personally I'm willing to pay the extra cost to get all the benefits, but I totally accept that some others have different priorities.

Well, diffraction exist, better avoid high pixel count unless, you shoot wide open all the time

Diffraction already hit R5 at f11, that's huge limitation
 
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Diffraction already hit R5 at f11, that's huge limitation
It is a huge limitation, as all the limits of physics are. But not as big as having a lower MP camera in the first place.

For example, the 45 MP R5 has 1.5 times as much linear resolution ("reach" for birders) as the 20 MP 1DX III. If at f/11 diffraction begins to diminish the actual resolution of the images coming out of the R5, that means its relative advantage over the 1DX III shrinks. But it does not immediately vanish, it gradually decreases as apertures becomes more narrow.

What's worse? Using a high resolution body and requiring the right conditions (shutter speed, aperture, light) to capture high detail images? Or using a low resolution body and being limited by the camera even if the other conditions are perfect?

If you don't need the high detail / reach, you of course don't benefit from a higher resolution. But there simply is no IQ penalty for using modern high resolution bodies. They are not more limited than lower resolution ones.
 
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They probably instead asked if customers would like their 100-400 to be able to extend to 500mm even if it were only 7.1 at that end.
Which is the better question, as increasing the f number and focal length at the same time is the only way to upgrade a lens without making it something completely different.

A 400 mm 5.6 and 500 mm 7.1 need the 71 mm diameter opening. 500 mm 5.6 needs 89 mm. That's a 57 % increase just in area, and has of course additional implications for size and weight of a lens, which are proportional to how much glas is in the lens.

A 100-500 mm 5.6 would not have been a spiritual successor to the EF 100-400mm 5.6.
 
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