Canon Mount Adapter EF-EOS R

Works!

I was so happy to see that this worked perfectly with my Canon R6 II and my EF lenses. I used it with both my ef 70-200 F2.8 IS. And my ef 24-70 f2.8. The auto focus is not affected in any way. It works with the AI focus and all. The Image stabilization was also not affected. My only regret is no paying the extra to get the model with the drop in filter slot. That seems like a great option now that i know how well this product works. Highly recommend it if you have a R body and EF glass.

I have several L series EF lenses that I use with a DSLR. Because of this adapter, I can continue to use them with my new R6 II. They mount securely and function perfectly with the mirrorless camera body. Autofocus and stabilization continue to work great.

I was gifted a Canon R7 mirrorless camera and have a lot of EF lenses. This is a great adapter to allow me to use my pre-existing lenses on the new camera body. It fits perfectly, it is seamless and easy to use. Picture quality has been excellent and it is a good size that is not too bulky. For the price, it adds a great value for what I have already. Autofocus is quick and the weight is minimal. I am very pleased with its performance.

Very useful to adapt different lens

I just upgraded to an R6ii from a 5Diii, and needed this adaptor to use my EF-L lenses with the new camera. I was nervous my lenses would have a loss in quality, but on the contrary they are actually performing better than ever. A lot of that has to do with the camera, because the R6ii is incredibly fast, but it's amazing to have an adaptor that gives no loss in quality and just flawlessly connects the EF lenses to the R system. I have had ZERO issues with connection, everything connects just like a lens connects straight to the camera. I have two L lenses, so I just keep the adaptor on the camera body and swap out the lenses to the adaptor as if they were connecting straight to the camera.The adaptor does add length, obviously, but the weight isn't that significant. If you're like me and have a heavy 70-200 lens, it works perfectly, but because of the extra length on an already long and heavy lens, I am careful when carrying because I don't want it just dangling on the adaptor/camera. The adaptor does connect tightly with no wiggle though, so it is safe if you do let the camera hang to your side with the lens, I'd just take precaution. Better to be safe than sorry.Honestly, I couldn't be happier. For the price, this is truly a great deal. $100 to make my expensive L lenses work with the new camera? Perfect! Definitely beats having to upgrade to even more expensive lenses right now. I did a lot of research on the three different Canon brand adaptors, and out of the three, this one was the best choice for me and was the cheapest as well which was a plus!If you're on the fence between the three different adaptors, I'd really recommend this one. Unless you really need an extra control ring (that's awkwardly placed), or drop in filters (that are very expensive), this is such a great price and works flawlessly!

When it comes to EF to RF adapters stick with genuine OEM. Another product I did my research on, and know people who bought 3rd party adapters and have issues with fitment, loose, auto focus errors etc. This thing works with all my EF/EFS lenses (some of which are as old as 25 years or as new as under 10 years) without a single hiccup.

I had a third party one that failed because it couldn’t support the weight of my sigma ef150-600. Should’ve just bought the official one from the get go!