p.3 #3 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
steamtrain wrote:
I've got me a Sony next to my R5, so I don't really care. If Canon opens up the RF mount it comes too late for me anyway.
Every time I contemplating about another lens I'm ending up with a new FE lens, not an RF lens.
I also have the R5 and I am actively looking for nice A7RIII below $1000 so I can do the same thing. I just bought a used RF 70-200 f2.8 instead of going for the A7RV or IV. I still have some legacy lenses and EF lenses along with adapters from when I had a Sony A7RIII. I am seeing and reading good things about the cheap Chinese lenses. Who knows the R5 and RF 70-200 may end up just for pictures of my grandson and grand daughter activities. Canon if you are reading this, that was a shot across your bow.
Apr 04, 2026 at 12:55 PM
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p.3 #4 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
steamtrain wrote:
I've got me a Sony next to my R5, so I don't really care. If Canon opens up the RF mount it comes too late for me anyway.
Every time I contemplating about another lens I'm ending up with a new FE lens, not an RF lens.
Interesting. I just switched back to Canon and one of the things that has been a positive surprise is some of their inexpensive RF lenses. So far, I really like the 85 f/2 IS STM Macro and I think I will feel the same way about the 24 f/1.8 IS STM Macro and the 100-400 f/5.6-8 looks really useful and a lot like the 70-300 that I liked very much on Fuji. I love the close focus capabilities of these lenses. Despite all the lenses made for Sony, there isn't anything quite like these lenses on E mount. I wasn't expecting that and the price of these lenses has prevented me from worrying too much about 3rd party lenses. That is just me, however. I am not saying there is nearly as many lenses for RF mount as Sony E mount or as many as there should be and I hope Canon opens up the RF mount. It is just for me, I was surprised by some pretty compelling and inexpensive options that Canon has provided.
p.3 #5 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
Steve Spencer wrote:
Interesting. I just switched back to Canon and one of the things that has been a positive surprise is some of their inexpensive RF lenses. So far, I really like the 85 f/2 IS STM Macro and I think I will feel the same way about the 24 f/1.8 IS STM Macro and the 100-400 f/5.6-8 looks really useful and a lot like the 70-300 that I liked very much on Fuji. I love the close focus capabilities of these lenses. Despite all the lenses made for Sony, there isn't anything quite like these lenses on E mount. I wasn't expecting that and the price of these lenses has prevented me from worrying too much about 3rd party lenses. That is just me, however. I am not saying there is nearly as many lenses for RF mount as Sony E mount or as many as there should be and I hope Canon opens up the RF mount. It is just for me, I was surprised by some pretty compelling and inexpensive options that Canon has provided....Show more →
Agree with this. The RF 35mm 1.8 IS STM and the new f/2.8 IS STM zooms are also excellent for their price and very compelling overall, I think.
Lately I have been shooting with the R8 which lacks IBIS, so having OIS in all these lenses is great and a unique benefit of RF for me.
I mean, is it just a rare coincidence that both Sigma AND Tamron announced their support for RF in april 2024 and they both just happened to be focused on APS-C only and not mentioning a WORD about a potential future in FF?
p.3 #7 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
I am new to the R/RF line. I have a collection of EF/EF-s lenses that work for me. For the cost of an adapter, I can use all of them on any R-series camera. I bought my R10 for its features, not for access to spending a truck load of money replacing perfectly good lenses. My R100 kit came with the 18-45mm and the 55-210mm. They are likely the only RF lenses I will ever own.
p.3 #8 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
Steve Spencer wrote:
Interesting. I just switched back to Canon and one of the things that has been a positive surprise is some of their inexpensive RF lenses. So far, I really like the 85 f/2 IS STM Macro and I think I will feel the same way about the 24 f/1.8 IS STM Macro
I own these lenses as well.
Steve Spencer wrote:
and the 100-400 f/5.6-8 looks really useful and a lot like the 70-300 that I liked very much on Fuji. I love the close focus capabilities of these lenses.
If that's your thing Canon is the way to go.
Steve Spencer wrote:
Despite all the lenses made for Sony, there isn't anything quite like these lenses on E mount. I wasn't expecting that and the price of these lenses has prevented me from worrying too much about 3rd party lenses.
I've paid 365 euro for the Samyang 24mm f/1.8, while the RF 24mm IS stm f/1.8 costs 700 euro. I got the RF 24mm gray market to keep the costs reasonable.
The RF 85mm f/2.0 was 680 euro, while the Viltrox 85mm f/2.0 EVO was only 157 euro....
The RF 100-400mm offers reach in a nice compact package, at a good price. I'm not investing in such a lens, as the Sigma 100-400mm contemporary is good enough for me. I bring it when traveling by car, and if I'm not traveling by car I leave it at home or in the hotel.
Steve Spencer wrote:
That is just me, however. I am not saying there is nearly as many lenses for RF mount as Sony E mount or as many as there should be and I hope Canon opens up the RF mount. It is just for me, I was surprised by some pretty compelling and inexpensive options that Canon has provided.
If you like 0.5 magnification Canon has a lot to offer.
p.3 #10 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
Max10 wrote:
Sigma's EF-EOS R adapter would be a good start. That will support Sigma's already existing EF mount lenses.
They work on RF already through Canon's EF-RF adapters. At least those that I have. Some other (typicaly older from their pre Art/Contemporary/Sports era) are reportedly not working, but two of mine are EX Sigmas and they do work.
p.3 #11 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
Do the Sony to Canon EF adapters work well? Do the lenses autofocus comparably well? I am considering switching (eventually), but I'd just use all my old EF glass on the Sony camera. The reason for the switch would be primarily access to 3rd party glass. There is so much available for Sony, and so little for Canon. It would open up future options for me.
p.3 #12 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
3 years ago I spoke to a Sigma UK rep at a trade show and he informed at the time that Sigma are waiting on licences from both Canon and Nikon in order to release their mirrorless lenses on both mounts.
Last year at the same trade show I heard another Sigma UK rep say to people who had asked why their lenses aren't available for RF and Z mount and the answer was "You need to ask Canon/Nikon why"
While Sigma's CEO politely avoids the question when asked, Sigma's UK reps are a lot more forthcoming. Given that not a single licensed FF RF lens is available on the market and Canon publicly went after Samyang a few years back it strongly suggests this is Canon's intent to have a closed mount on the FF side when it comes to AF lenses.
p.3 #13 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
bcguy wrote:
Do the Sony to Canon EF adapters work well? Do the lenses autofocus comparably well? I am considering switching (eventually), but I'd just use all my old EF glass on the Sony camera. The reason for the switch would be primarily access to 3rd party glass. There is so much available for Sony, and so little for Canon. It would open up future options for me.
I have many Canon EF lenses and several adapters for Sony (including Sigma MC-11). You can get good results optically but don't expect the AF to be like native EF. In some cases it is good enough, in others frustrating.
Best AF will be with EF lenses adapted to modern RF bodies like R1/R3/R5 II.
p.3 #15 · Canon Says it’s up to Sigma to Make Full-Frame RF Lenses
EB-1 wrote:
I have many Canon EF lenses and several adapters for Sony (including Sigma MC-11). You can get good results optically but don't expect the AF to be like native EF. In some cases it is good enough, in others frustrating.
Best AF will be with EF lenses adapted to modern RF bodies like R1/R3/R5 II.
