The Canon EOS R3 is out in the wild

AlanF

Stay at home
CR Pro
Aug 16, 2012
8,235
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The blue rectangle is the dimension (relative) of a FF sensor. I was kind of excited when the G series cameras were getting 1” sensors then realized they could never compete with the M cameras I already had.


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They don't compete with the M on S/N but they are a good example how you can squeeze out "reach". I have a Sony RX10 IV which I use occasionally. It's incredibly good, and its zoom at f/4 and 220 mm has an FF fov of 600mm and resolves as well as my 5DIV with the 100-400mm II at 400mm. Interestingly, Sony, which used to bring out new models yearly, hasn't updated the RX10 range since 2017. It has the A9 AF system and Sony had a firmware upgrade to eyeAF. Canon never competed with it. Before the RX10 IV, I had a G3X but the lens wasn't as good and the AF in a league or two below.
 

stevelee

FT-QL
CR Pro
Jul 6, 2017
2,028
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The blue rectangle is the dimension (relative) of a FF sensor. I was kind of excited when the G series cameras were getting 1” sensors then realized they could never compete with the M cameras I already had.
OTOH, my G7X II was replacing my S120 and not my Rebel, so a 1" sensor was a nice step up. And I took some rather nice photographs with the S120, some of which hang on my walls. As a practical matter for me anyway, sensor size is a matter of noise. The G5X II does pretty well up to ISO 1600 in most cases, comparable to 6400 on my 6D2, more or less. My pictures of Venice by night from the balcony of my stateroom were shot at ISO 2500 and 3200. The sky was a little noisy, but that was easily correctible, since there was no detail to lose. I have made some rather nice 13" x 19" prints of one of the shots.
 

usern4cr

R5
CR Pro
Sep 2, 2018
1,155
1,907
Kentucky, USA
All three RGB values have to be interpolated, not just two of them. Mainly because the colors of the filters are not the same colors as those emitted by RGB screens, but also to compensate for light sources with different spectral distributions.
Yes, all 3 have to be interpolated. But the fact that there are no sensors at that location for the other 2 colors is what I'm talking about. You have to infer what the value would be by considering the neighbors. You only have one piece of data at the particular spot, and that piece has an appreciable peak of color for one of the colors over the others.

If you had a foveon sensor, with all 3 colors in one spot, you could "interpolate" 3 additional intermediate spots of color by using the neighbors and thus a 10MP foveon sensor could output a 40MP file - Does that mean it's a 40MP sensor? If all the manufacturers had Foveon type sensors and did this and it was widely accepted, would you be also be saying it's a 40MP sensor?
 

Mikehit

EOS R6
Jul 28, 2015
3,335
541
True, like 2/3" and 1/3" sensors are smaller than those dimensions. Interestingly, the crop factor of the 1" sensor relative to Canon APS-C (1.68x) is close to that of APS-C to FF (1.6x).
I was surprised to learn that 4/3 sensor is defined in exactly the same way - it is pure coincidence that the sensor dimensions are a ratio of 4:3.
 
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Mikehit

EOS R6
Jul 28, 2015
3,335
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I really wish they'd add "motion trigger" ability to video (or high FPS continuous stills) so that you could leave a camera on a tripod and have it only record with sufficient motion happening (like a hummingbird landing on a feeder). Then you'd only have small bits of video or stills to worry about in post instead of gazillions of "nothing" to store and wade through in post.

I like the Olympus Pro-Capture mode (Panasonic has their equivalent) where you half-press the shutter and it continually writes to the buffer. When you see the action you want to capture, you fully press the shutter and it records to the card the previous 1 second and a user-definable number of shots afterwards. The user can define the frame rate, the period before shutter press that is recorded and the number of shots afterwards - all this means that if you are a bit late hitting full shutter, you probably still have what you wanted.
 

dilbert

EOS M6 Mark II
Aug 12, 2010
89
75
To cut a long story short, you're very unhappy that I pointed out some of your assumptions about how things work are dead wrong. So you're going to misrepresent my position and the things I've said, and resort to personal attacks and fallacies.


The RF mount is superior to EF mount and as new lenses come out, they'll perform better than the older EF equivalents when mounted on suitable cameras.
 

R1-7D

EOS RP
Jun 25, 2012
761
110
Canada

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john1970

EOS R5
CR Pro
Dec 27, 2015
237
274
Northeastern US
According to the Twitter feed Richard's lips are sealed. I found the following exchange quite interesting. When someone mentioned that "think your going to need a longer lens for West Ham next season". Richard's reply was "You've not heard the news". I wonder if the sensor is a quad bayer array with a high res setting? There is a rumored resolution trick in the R3 and so far it has not been disclosed.
 
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unfocused

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Jul 20, 2010
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www.mgordoncommunications.com
According to the Twitter feed Richard's lips are sealed. I found the following exchange quite interesting. When someone mentioned that "think your going to need a longer lens for West Ham next season". Richard's reply was "You've not heard the news". I wonder if the sensor is a quad bayer array with a high res setting? There is a rumored resolution trick in the R3 and so far it has not been disclosed.
More likely he's simply referring to the new big whites that are also on the horizon.
 
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john1970

EOS R5
CR Pro
Dec 27, 2015
237
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Northeastern US
More likely he's simply referring to the new big whites that are also on the horizon.
Very well could be that scenario as well, but with two RF big whites already announced I thought maybe he was referring to some unannounced camera feature. I suspect that in 4-6 weeks we should have a formal announcement will all the details.
 

R1-7D

EOS RP
Jun 25, 2012
761
110
Canada
Very well could be that scenario as well, but with two RF big whites already announced I thought maybe he was referring to some unannounced camera feature. I suspect that in 4-6 weeks we should have a formal announcement will all the details.

Hopefully it's not that long. I suspect with the Olympics only 4-6 weeks out there will be an announcement before then, with a release around the Olympic's timeframe. *fingerscrossed
 

Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
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I was surprised to learn that 4/3 sensor is defined in exactly the same way - it is pure coincidence that the sensor dimensions are a ratio of 4:3.

Not pure coincidence. Television in the vacuum tube days was 4:3.
 

Michael Clark

Now we see through a glass, darkly...
Apr 5, 2016
3,657
2,142
Yes, all 3 have to be interpolated. But the fact that there are no sensors at that location for the other 2 colors is what I'm talking about.

Each photosite is sensitive to all of the "colors", which aren't really colors at all until they're perceived by our brains, it's just that photosites filtered with one of the three filters are more sensitive to some wavelengths than others. But they all share overlapping sensitivities. The photosites under all three colors of the filters in a Bayer mask are sensitive to all three "colors". There's no sensor at any one location for any single color.

It works just like our retinal cones. Our brains construct the perception of color, which really does not exist in light itself, from the differences between the S, M, & L cones. The peak sensitivity of our M & L cones are very close to the same wavelength, and most of each type's sensitivity overlaps the others. Our brain uses that minor difference to create color.
 
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usern4cr

R5
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Sep 2, 2018
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Each photosite is sensitive to all of the "colors", which aren't really colors at all until they're perceived by our brains, it's just that photosites filtered with one of the three filters are more sensitive to some wavelengths than others. But they all share overlapping sensitivities. The photosites under all three colors of the filters in a Bayer mask are sensitive to all three "colors". There's no sensor at any one location for any single color.

It works just like our retinal cones. Our brains construct the perception of color, which really does not exist in light itself, from the differences between the S, M, & L cones. The peak sensitivity of our M & L cones are very close to the same wavelength, and most of each type's sensitivity overlaps the others. Our brain uses that minor difference to create color.
Yes, I agree with what you've said. But I consider 1 "photosite" to be the sensor receptor + filter - as they're embedded together they function as 1 single unit. The post-interpolation results will never be as accurate as if every photosite had 3 sub-photosites (1 of each type for a "true" pixel). Since there is a considerable sensitivity overlap between the 3 photosite sensitivities, then I'd hazard a guess that a 20MDot sensor would have IQ maybe halfway between a 20/3=6.7M "true"P sensor and a 20M "true"P sensor. So you've convinced me to go half-way (or so) to saying a 20MDot sensor has the quality of a 20 "true"MP sensor. Beyond that we're both guessing, so I'm happy to leave it at this.

This makes me wonder what the emitter response curves are for the 3 types of "dot" emitters in an EVF and a back LCD screen. Assuming (hopefully) a similar overlap as you've mentioned, this would also make them half-way (or so) to having the IQ of a "true"Pixel emitter. That's a lot better than I had thought before. So thanks for your feedback.
 

navastronia

EOS RP + 5D Classic
Aug 31, 2018
713
845
According to the Twitter feed Richard's lips are sealed. I found the following exchange quite interesting. When someone mentioned that "think your going to need a longer lens for West Ham next season". Richard's reply was "You've not heard the news". I wonder if the sensor is a quad bayer array with a high res setting? There is a rumored resolution trick in the R3 and so far it has not been disclosed.

I read that exchange as some kind of inside joke about the football teams.