well done. works very well. Allows legendary Zeiss lenses to be used on most Nikon film and digital cameras. focuses perfectly.

bought three adapters with a Canon R mount (one for Leica R, one for Contax and one for Minolta MD). They all reach exactly infinity. The internal anti-reflective paint is well finished. When I check them with a caliber, the two sides of the adapters appear planar (but I don't have any wide-aperture lenses to test that on). On the camera side, they are all precise and without light leakage. On the optical side, I noticed a slight light infiltration on two adapters. Of course, I purposely searched for them by bringing a 500 lux LED flashlight half a centimeter away from the adapter. Light penetration is very unlikely in normal situations (perhaps on an easel on the beach in August). I solved it anyway with a small rubber grommet. If you're shooting freehand, that's not necessary, the hand is hiding a possible infiltration. Overall they look like good adapters to me. Due to their robustness, they can withstand lenses up to 600/700 grams. However, I would not mount lenses that are larger than one kg on the nose.

Used on Techart Pro (so not on the Leica system), very useful for adapting the M42 lenses to my Sony (the Techart Pro adapter has a Sony to Leica M connection). A bit expensive for a piece of metal, but at least it's not plastic, it looks good and isn't difficult to attach.

Compared to the Leica 2000b

Leica M ring

The Leica lenses fit perfectly on my xt20 the ring is very soft on both sides.. here is the one I received.

Absolutely love this. It is perfect for my cameras. I have 2 digital and one 35mm and it works great with all 3. It also has an attachment that works with my Samsung Galaxy S7 cell phone.

I have several Leica M lenses and I was looking for an adapter ring, but the original Fuji has always seemed to me excessively expensive even if it has some functions in itself such as aperture recognition. But the price difference is truly incredible. Well built and durable ring and now I use a 90mm Leica M on the X-PRO1 without any problem. Obviously forget the automatisms, but with a little attention you will not have any problems.