bought the 46mm to use with the Leica Summilux 35 Asph Fle. In contrast to other filters, this one is slightly larger on the outside, so the lens hood no longer fits. I thought it would be good to know if anyone uses it with this lens. Other than that, it's a great filter!

I treated myself to a Leica Summicron R 50mm f2 for my Nikon D750 and now needed an adapter. This one is attached instead of the Leica bayonet with the 6 existing screws. (Please make sure that the small ball that does the rastering of the two doesn't get lost. All you have to do is put the bayonet up and slowly lift off the old bayonet ring!) The lens fits like one, and focuses cleanly to infinity . The camera does not recognize any lens data and there is no jumping aperture either, but the exposure is still great. The adapter is therefore really recommended.

To mount a Voighlander Leica M lens on a Fuji X E3, very good manual coupling card but a bit thick but that was on the announcement and it could be the optical pressure. So very satisfied.

bought an FD → Leica M. It's a FL lens, which may or may not be used depending on the lens, but I was able to use it normally with 50mmF1.4. The FD lens mount has a locking mechanism. Although the structure is more complicated than other mount adapters, the price is the same as other mounts, so it is very helpful. Thanks to this locking mechanism it is also possible to move the aperture flap and in the case of an F1.4 lens this is very convenient as it can be used as an aperture ring for F1.4 → F2.8 → F5.6 → F11 when the aperture is set to minimum.

This adapter opens the lens of my Leica camera with a Canon lens

Got the L/RL/M adapter to use a Leica R Macro lens on the Leica M for the few macro photos I take. I didn't feel like paying 160 EUR for an original Leica adapter, so I bought this one from K&F. R lens fits perfectly with no play, and the connection to the M camera is also perfect. It goes up and down nicely, without exerting any force, without anything wobbling. Perfect for my area of application. I've bought 3 K&F adapters so far and I'm super happy with them. They make a valuable, stable impression. It may be that after years they no longer have the quality of a Leica original due to larger manufacturing tolerances, but currently. it's great

bought a Canon FL19mm F3.5 lens to enjoy with the Leica M6. There isn't any live action on film yet, but there are no problems joining through this adapter and I'm happy.

Compared to the Leica 2000b