It’s Canon EOS R6 Mark III Week With a Fresh Teaser

[Toni]

EF mount was never open, it was reverse engineered by the likes of Sigma and Tamron. It's a much simpler protocol than RF.
And back then the third party manufacturers only made low quality and cheap lenses that often could not focus properly. So they were not really a threat for Canon. Today Sigma and Tamron make amazing quality lenses and Chinese manufacturers getting better and better.

I think Sony might be in the situation soon to be able to sell only camera bodies and professional Sony lenses to people will lots of $$$. Everyone else will just use Sigma, Tamron or Chinese lenses.

Excuse me, but if Tamron or Sigma produce RF lenses for APS-C, they're capable of doing the same for full-frame RF.
So, it's Canon that's blocking them.

And I don't think anyone makes better lenses than Sony. It's just that there are different needs to be met.

 

[Toni]

It was true initially - that third party makers brought generally cheap, low-quality lenses to the EF mount. But Sigma brought some really nice lenses to the party a little later on, with the ART series. And their 150-600 lens was really never met head-on by Canon. Nikon has/had something of that range and price, but Canon didn't counter it, basically ceding the lower-cost birding market to Sigma (and Tamron). Now, we DO have reasonably-priced super-telephoto zooms like the 200-800 (which I have sitting about 20 feet from me, having just bought one).

I think Canon actually invited Sigma and others to play with at least the APS-C lenses, which is maybe why Canon has not really brought out much in that format other than very cheap, light "kit" type lenses. Although the 18-150 is pretty good optically, for such a wide-ranging zoom, they have no f/2.8 glass and no 15 or 16-xx lenses that would mimic the full frame 24-xx "normal" lenses.

Canon has left the APS-C RF market to other manufacturers because it's clearly not in their interest.
But that makes it clear that if those other manufacturers aren't releasing full-frame RF lenses, it's because Canon is blocking them.

I switched from a Canon APS-C DSLR to a Canon full-frame mirrorless camera. If I had known that today the RF full-frame mount would still be blocked for other manufacturers, I would have switched to another brand. It's that simple.
In fact, if it weren't for the expense I've made on the Canon equipment, I would switch brands right now. Because locking the R mount seems like a rip-off to me.

 

[scyrene]

There are two things I am excited about: low light capability and the bump in auto focus. I'm strictly a hobbyist and I'm currently shooting a 6Dm2. Perhaps the r6m2 would be a big enough jump in both of those areas. Particularly the low light.

Image level raw low light capability hasn't changed much in a while.

 

[candyman]

Because locking the R mount seems like a rip-off to me.

Maybe a rip-off to you but a Canon business strategy. One can only guess why this strategy was chosen, but in a shrinking market, Canon would still want to maximize profits. They do this by making money from both cameras AND lenses, thus leaving a limited lens market share to others.

 

[scyrene]

Years ago, I thinked that R mount was a technical move; now I think it was only a piece of marketing.
Canon R mount is still closed, so best move is buy a Sony camera (or other brand) and enjoy lenses from others manufacturers.
In 2025 there is no way in a thing SO CLOSED as R mount.

Technical improvements include: autofocus down to f/22, freedom to design smaller/lighter lenses at certain focal lengths, faster lens-body communication allowing for snappier autofocus(?). But they could of course have kept EF, and being able to shut out third parties probably influenced the decision to make a new mount.

 

[P-visie]

I switched from a Canon APS-C DSLR to a Canon full-frame mirrorless camera. If I had known that today the RF full-frame mount would still be blocked for other manufacturers, I would have switched to another brand. It's that simple.

You assumed that third party FF AF lenses would be available for the RF mount. You made a wrong assumption and you did not evaluate alternatives should your assumption be wrong.
So who is to blame for that? (Hint: it’s not Canon).

 

[Chig]

I thought R mount was a technical move because that's what Canon touted when they released the R mount.

Canon's EF mount was open. Why does the RF mount have to be closed? It makes no sense.

Who says the EF mount was ever open?

 

[Toni]

You assumed that third party FF AF lenses would be available for the RF mount. You made a wrong assumption and you did not evaluate alternatives should your assumption be wrong.
So who is to blame for that? (Hint: it’s not Canon).

You're right. I should never have stayed with Canon.

 

[blackcoffee17]

Technical improvements include: autofocus down to f/22, freedom to design smaller/lighter lenses at certain focal lengths, faster lens-body communication allowing for snappier autofocus(?). But they could of course have kept EF, and being able to shut out third parties probably influenced the decision to make a new mount.

They could have not kept EF, because of different flange distance. Otherwise the mirrorless cameras would be quite bulky and ugly.

 

[John Wilde]

Maybe a rip-off to you but a Canon business strategy. One can only guess why this strategy was chosen, but in a shrinking market, Canon would still want to maximize profits. They do this by making money from both cameras AND lenses, thus leaving a limited lens market share to others.

Canon isn't the only one. A recent Petapixel headline: "Nikon Z-Mount Is Closed to Sigma, and That’s Becoming Impossible to Ignore"

 

[Exploreshootshare]

The presentation of the R6iii is hours away and I´m really curious, but somehow this forum is dominated by a topic which has been discussed endlessly with "arguments" that clearly ignore the fact that camera manufacturers will only survive in the future by selling lenses, not cameras. Cameras are soooo darn good today, you don't need to upgrade every 2-4 years. Hell, I could even shoot for 15-20 years with the R5. Lenses will drives sales... Therefore, Canon is protecting its future. Is it necessary? Definitely! I want to shoot Canon in 20, 30 years (unless the RF mount is still locked sry, now I´m serious again), so I'm accepting the fact that RF is a closed system. Is it nice? No, not for everybody? Does one like it? Nope. But as my mom always said: "lifes though, get used to it." and "life is not fair, deal with it".

Actually, I didn't wanna rant here... just wanted to say: lets put the old topic behind and focus on new gear

 

[scyrene]

I would assume that the term Digic X is more of a family of processors rather than one processor model.

No need to assume, it absolutely is.

 

[Canon Rumors]

Should I release the entire specifications for the R63? Or just wait 8 more hours. I'm actually having a moral dilemma.

 

[mangobutter]

RELEASE!!!

 

[John Wilde]

Should I release the entire specifications for the R63? Or just wait 8 more hours. I'm actually having a moral dilemma.

Wait. “The suspense is terrible. I hope it will last.” (Oscar Wilde) Besides, nothing good can come from annoying Canon or any Canon sources you may have.

​

 

[GMCPhotographics]

They could have not kept EF, because of different flange distance. Otherwise the mirrorless cameras would be quite bulky and ugly.

The reason Canon wanted to utilise a new mount (R) had nothing to do with the EF's mechanical layout. It was purely the fact that Canon wanted to introduce more data options between it's camera and lenses and that required a new contact harness and communication design.

 

[Mirnavi]

Should I release the entire specifications for the R63? Or just wait 8 more hours. I'm actually having a moral dilemma.

Hmmm..I’m thinking...wait why 8 hours?

 

[mangobutter]

Hmmm still no lock button for the mode dial. (it seems)

 

[archie]

Hmmm still no lock button for the mode dial. (it seems)

Hey, did you run the image through a deblurring tool?

 

[Mirnavi]

Hey, did you run the image through a deblurring tool?

just click Home and you will see the specs