K&F ConceptEF to EOS R Adapter, Auto Focus EF EF-S Lens to RF Mount Adapter with Removable Tripod Mount Compatible with Canon EF EF-S EOS RP R R6 R5 Cameras

I recently bought a Canon R10 and needed an adapter - didn't want to pay full price for a Canon one, didn't want to get a used one, especially when this is available brand new for cheaper than most used options.Its a full metal build from the feel of it, a bit weighty but feels super solid. No performance different in any of EF lenses either. They perform just like they used to on my old EF mount camera.Save yourself some money and just grab this instead of the canon one. K&F did good on this one!

Fantastic mount adapter.I purchased this to use my existing EF and EF-S lenses on a Canon EOS R10.All of the lenses I have tried have worked well with the adapter, both Canon and Sigma lenses.

Does what says on the tin. Much cheaper than the Canon one, and works equally well. Has a separate collar to shift the lens balance forward, if using long lenses.

It's either a bad design or just a defective item. Anyways, it doesn't work with any of my glass (Canon, L lenses) unless I twist the lens hardly clockwise. Which is not good. At all! The RF-EF adapter that came with the camera (I got a kit which consists of a Canon EOS R6 mk ii, a Canon 24-105mm f/4 L and a RF-EF adapter) works flawlessly, so does another one I bought separately. This one I'm returning, it made me miss some shots.

EDIT 21/7/24. Customer service reached out to me and sent a new adapter to see if it was just a faulty unit that I had received. This seems to be the case as the new one is still working after a week so I'm raising my 1 star to 4 stars.The design looks robust and the price is very good. The only reason I'm not giving 5 stars is that the adapter doesn't have the weatherproof rubber seal that L Series lenses have and you need a hex key to remove the tripod mount.Review used to say: Seemed OK at first, fitted and allowed all functions. After a few days and a few lens changes the camera kept going from AF to MF and back. A few more lens changes and the rotational movement was noticeable and all I had to do was move the zoom ring for it to mess up the focus function. Sent back as defective.

I bought this last July, to go with my new eos R8.This adapter has allowed me to continue to use my EF glass with the new mirrorless system.This adapter supports autofocus and aperture and works perfectly :)

Solid connection and all features work

Bought this for my canon R7.Use it with ef 70- 200mm lens. It started working then stopped focusing? Tryed everything to get to focus but didn't work.Product does look good. Nicely packaged also.