Fotasy Adjustable T2 T Mount Lens to Cannon EOS RF Adapter, T2 Telescope Lens R Adapter, T Mount to RF, Compatible with Canon EOS R Mirrorless Camera EOS R RP Ra R3 R5 R6 R7 R10

does the job

Used this to adapt old Canon R lenses (M39/LTM/LSM) to EOS RF mount and I am beyond pleased. I used the chrome 35mm f/1.8, 50mm f/1.8, and 135mm f/3.5 lenses and the results all came out wonderfully. Adapter is well crafted and had zero issues mounting the camera or the lenses. At this price, it’s an amazing value. I highly recommend getting one!

This mount works flawlessly and Leica M lenses pair beautifully with the Canon R mirrorless cameras. I'm using this with a 50mm F1.0 Noctilux on an R6 and getting great results. Wide open I get vignetting of course, which I find quite attractive.

Product was exactly what I needed

High quality, fits as it should. Good buy.

I've bought several of these for my adaptall collection and all seem to function as intended. Sometimes I wonder if perhaps this adapter limits my 55BB Tamron lens from focusing to infinity or whether it is my own short fall in technique as it is quite a difficult lens to capture with. Nonetheless, I find this product to be of value and I have had no other issues with any other lenses. Overall a great product.