The 10 Most Important Canon EOS Digital Cameras of All-Time

I've owned 5 of your top 10: 300D; R5; 70D; 7Dii; EOS M; and the Dishonourable Mentioned 5DSr. And, I still have the 300D alongside my R5ii, R5 and R7. If I had to keep one MILC and one DSLR it would be the R5ii and the 5DSr. Once I got the 5DSr, I sold my 7Dii and 5Div. The 5DSr gave by far the best IQ, outresolved the 7Dii and had better AF than it, albeit not its burst rate. I've had some of my best bird shots, including BIF with it as well as landscapes. It took the R5 for me to sell it. Here's my favourite from the 5DSr with the EF 100-400mm ii.

3Q7A5312-DxO_pelican_diving_beak_about to_hit-1.jpg
 
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I would swap 40D and R1 out for R6 and M50. M50 is showing Canon can make a well spec&relatively cheap mirrorless.

And R6 deserves more respect than it has now, as it is crucial along with R5 to stop most of the mid range Canon shooters jump to Sony(or other brands). Nikon did a huge mistake of making Z6ii Z7ii as a lame update. Z9 Z8 somewhat came out too late and not for the enthusiasts. Z5ii Z6iii are ridiculously late to the party.

Imho 6D R8 5Ds/5Dsr are honourable mentions.
 
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I've owned 5 of your top 10: 300D; R5; 70D; 7Dii; EOS M; and the Dishonourable Mentioned 5DSr. And, I still have the 300D alongside my R5ii, R5 and R7. If I had to keep one MILC and one DSLR it would be the R5ii and the 5DSr. Once I got the 5DSr, I sold my 7Dii and 5Div. The 5DSr gave by far the best IQ, outresolved the 7Dii and had better AF than it, albeit not its burst rate. I've had some of my best bird shots, including BIF with it as well as landscapes. It took the R5 for me to sell it. Here's my favourite from the 5DSr with the EF 100-400mm ii.

View attachment 227521

I hated the cameras because of the sensor. It felt 10 years behind what Nikon was doing with the D8xx and those were also better cameras in almost every other way too.

Noticeable with the eyes how crappy the dynamic range was, especially in the shadows.,, and I'm not a DR evangelist. Anything with any level of dark to it looked terrible and printed terrible. There were no real software options that could clean them up at the time.

Resolving power was way too restricted to the lens that was on it. There was a lot of lenses in the EF lineup that were never going to do much with the added resolution, especially Canon's wide angle offerings.

These were half-assed cameras to get more margin out of the 5D4. I really haven't met anyone that liked them, including landscape shooters. Why anyone would have bought one of these over the 5D4 is beyond me.
 
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I hated the cameras because of the sensor. It felt 10 years behind what Nikon was doing with the D8xxx and those were also better cameras in almost every other way too.

Noticeable with the eyes how crappy the dynamic range was, especially in the shadows.,, and I'm not a DR evangelist. Anything with any level of dark to it looked terrible and printed terrible. There were no real software options that could clean them up at the time.

These were half-assed cameras to get more margin out of the 5D4. I really haven't met anyone that liked them, including landscape shooters. Why anyone would have bought one of these over the 5D4 is beyond me.
I shot a Nikon D850, with the 500/5.6 PF, alongside the 5DSr with 100-400mm ii for a year. The D850 knocked the spots off all Canon DSLRs, for both IQ and AF, but I was still happy to take out the 5DSr when I needed a zoom as Nikon couldn't match the 100-400mm ii.
 
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These were half-assed cameras to get more margin out of the 5D4. I really haven't met anyone that liked them, including landscape shooters. Why anyone would have bought one of these over the 5D4 is beyond me.
I don't know, I think the 5Ds and sR need a bit more credit than they're getting here. They were based on the 5D III, and released a year before the 5D IV, so I think lots of people owned a 5Ds/sR before the 5D IV came out. I know this because I looked at getting an sR and then they announced the 5D IV, so I promptly waited a year to see if they'd update the sR based on the 5D IV, and when they didn't, I bought a 5D IV. When this released in 2015, the next highest resolution option from Canon was the 5D III at 22.3mp. So while they may yet be detested, they literally doubled the next highest resolution option in the lineup, which was their value proposition and enough people certainly seemed to buy into that. With that said, I still know photographers using them today with great success. Despite their limitations, they do have a bit of a following. I know that if they released a sR version of the R5 ii I'd buy it immediately, even if it suffered a burst rate and video reduction.
 
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My path has been so far:
350D -> 20D -> 5D -> 5D mkII -> 1D X -> R5

While I agree with most of the list, I do struggle with the inclusion of the 40D and of the 7D mkII and of the R1 as I do not think they were important nor revolutionary in any sense. Not that they are bad cameras, on the contrary. Just not real milestones.
 
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I would swap 40D and R1 out for R6 and M50. M50 is showing Canon can make a well spec&relatively cheap mirrorless.

And R6 deserves more respect than it has now, as it is crucial along with R5 to stop most of the mid range Canon shooters jump to Sony(or other brands). Nikon did a huge mistake of making Z6ii Z7ii as a lame update. Z9 Z8 somewhat came out too late and not for the enthusiasts. Z5ii Z6iii are ridiculously late to the party.

Imho 6D R8 5Ds/5Dsr are honourable mentions.
The 40D was the first to have live view. That one achievement paved the way for all mirrorless cameras that came much later. It was the initial technology that was the foundation that would allow other development to sit upon and render the optical view finder redundant and offer software based AF.
It was a great camera, but I remember thinking when I first used live view, that SLR cameras were coming full circle and probably going back to range inder style of cameras. Add an evf and software based focussing and there you have the mirrorless format technology bed.
 
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In terms of impact,
The Eos 300D was my first DSLR and a used a Sigma 12-24 as my UWA. The only Canon offering at the time was a 17-40L which wasn't very wide on a 1.6x crop.
The 20D was a legend, but a stop gap for me before the mighty 5D, my first full frame DSLR. Sure, pedestrian fps, awful rear lcd and very basic AF.
The 40D introduced me to live view and it was great when this was ported over to the 5DII.
The 7D was an amazing camera except for the very dissapointingly noisy sensor.
The 5DIII didn't offer anything revolutionary other than making the 5 series what it is today, pro build, just below the 1 Series. it had pro resolution, build, features and AF. Dual card slots too. The 5DIII paved the way for the R5.
These day's I use a pair of cams, a R6ii and a R5. I might upgrade my R5 later in the year fro a R5ii.
 
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I've owned 5 of your top 10: 300D; R5; 70D; 7Dii; EOS M; and the Dishonourable Mentioned 5DSr. And, I still have the 300D alongside my R5ii, R5 and R7. If I had to keep one MILC and one DSLR it would be the R5ii and the 5DSr. Once I got the 5DSr, I sold my 7Dii and 5Div. The 5DSr gave by far the best IQ, outresolved the 7Dii and had better AF than it, albeit not its burst rate. I've had some of my best bird shots, including BIF with it as well as landscapes. It took the R5 for me to sell it. Here's my favourite from the 5DSr with the EF 100-400mm ii.

View attachment 227521
I still have my 5DSr and still like it. When I bought it, I paired it with the Sigma 14-105 f.4 Art and the combo did and still does work very well.
 
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