Canon EOS R1 Specifications [CR2]
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Not really consistent with the 1 series history, though. Calling it R1s would portend a high resolution body.
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Not really - at the rumoured 30MP it would be about 50% higher than recent 1 series bodies anyway. The 5 series has had the high-MP models in recent years.
In any case, there is a lot more to being a flagship camera than sensor resolution, and frankly a lot more to 'resolution' than the number of MP.
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Loswr
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There may not ever be an R3II. Even if there is, Canon can differentiate on price and a few features. Think R8 vs. R6II.
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I believe if the R1 has the "3" feature, it's a strong sign we shouldn't hold our breath on R3ii
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Incidentally, this is what Yu Takae (Senior Manager of ILC product planning) of Sony says:
"An A/D converter and memory are placed within each pixel to eliminate image distortion caused by playback time lag."
There's probably something lost in translation (within each pixel), but it does seem to suggest per pixel ADC. He could be wrong, his title isn't a technical one.
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I do not think that is in conflict with what Dragon is saying.
Sony claims that they split each photosite between memory storage and autofocus.
I take that to mean that AF, the EVF, and the back screen are reading line by line.
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The description I offered was that stated by DPR https://www.dpreview.com/articles/6717086661/sony-a9-iii-image-quality-dynamic-range-analysis . Looking around at other reviews, most don't go into detail. DPR's take makes the most sense and the article quoting the Sony marketing guy has gone through two translations, so hard to call.
EDIT. An A/D converter at each pixel would not be helpful in that any A/D converter has finite (and typically fixed) conversion time. In order to change shutter speed, there has to be a mechanism to move the sensor charge very quickly to a place where it can be stored for conversion, so the split pixel description is the most logical.
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I agree with your edit, just found it interesting.
What I'm not clear on is why the charge storage diode has to fight for the same volume as the photo-diode, as opposed to living behind it.
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Maybe a couple of reasons. It has always been difficult to make the high purity photodiode layer deep enough (that was one of the drivers for BSI sensors), so vertical stacking would be a challenge and this is a BSI sensor, so "behind" would actually be "in front of" right in the midst of the wiring layers that are isolated by polysilicon (not epitaxy). The other issue is that the "storage diode" has to be shielded from light or it also becomes a photodetector at an unwanted time and that "shield" (likely metal) would be in the way of charge transfer. To Sony's credit, this is not a simple chip design, but physics is still the boss. The joint Panasonic/Fuji effort with an organic photosensitive layer was really interesting, but all has been quiet on that front for several years. https://news.panasonic.com/global/press/en180214-2
I don't know if Panasonic is still even developing sensors. The challenges with the above design AFAIK were power consumption and lifetime and this work was done in conjunction with Fuji ( I think the film division) who developed the material for organic layer.
Another approach that has been investigated is the use of an LCD shutter in front of the sensor, but due to polarization requirements ,LCDs basically eat one stop of light right out the gate and also have issues with enough opacity and speed to work as an effective shutter.
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So you're saying Canon is living in the past? Because the competition flagships are both high megapixel, and one of them is due for replacement late this year or early next.
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Loswr
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Canon will listen to and address the needs of their customers. Why should Canon mimic their competitors? It’s more likely that Sony and Nikon offer high MP flagships because Canon does not.
As I’ve said before, when the 800-lb gorilla wants the bamboo the smaller mammals need to find a different food source.
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Why is Canon scared to let the user decide? Make it 50 MP and let us make the file size, based on our needs.
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Bandwidth between sensor and the DIGIC chip and processing speed of the DIGIC processing chip likely are limiting factors.
120 fps @ 30 MP 14-bit/pixel ~= 50 Gbits/second.
You can slice that data-rate however you want -- 120 fps @ 30 MP or 60 fps @ 60 MP or 40 fps @ 90 MP, and so on. For a sports/photojournalism focused camera I can see them choosing a lower MP and higher fps.
Note that Thunderbolt 4 maxes out at 40 Gbits/second, so 120 fps @ 30 MP is already higher bandwidth than that. 120 fps @ 60 MP or so might not be realistic.
We all want the 100 MP @ 1000 fps camera, but it is about as unrealistic as asking for the 20-2000mm f/2.8 lens.
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