K&F Concept Lens Mount Adapter Compatible for Leica M Lens to Alpha Nex E-Mount Camera Body with Matting Varnish Design

It works perfectly well.

quite solid built, a bit too tight. Still work perfectly. Being tooTight is much better than too loose.

The K&F pro adapters are definitely top notch adapters. I’ve bought these adapters before for different camera/lens combinations and they are night and day better than cheaper alternatives. There’s no wiggling and it’s a clean mount.

It would be a great adapter if it wasn’t for the fact that there is a light leak. Not terrible but it just shouldn’t happen. Maybe a defect.

I can only speak for the version that I purchased which is the Leica M mount to the Sony E mount. I have about 10 different lens adapter types and this one has better fit and finish than most. It does cost just a bit more but the quality is better. Been taking pictures today with a Leica M rangefinder coupled lens on a Sony A7 camera with great results. The E mount side went on smoothly with minimal play, no light leaks and not too loose nor to tight. Not as good as a factory lens mount, but I have no concerns on the fit. About average or better compared to other adapters. The Leica M mount side fits great, as if it were a factory mount. It's better than I expected and I would purchase this version again. Hope this helps.

Very well made. A solid, functional piece.

The product is good.

Works like a charm for a fraction of the price of the most expensive ones. I’d suggest using this only with 50mm lenses and above, as you might want to buy the pricier ones the wider you go. But with 50mm lenses this performed really well on my Sony using M lenses.

I’m happy with this as it allows me to use my leica lenses on my sony digital camera.

This adapter does not have an accurate flange distance. It does not let you accurately focus to infinity with Leica M glass when adopted to a Sony A7R5. Tested it with a 2 lenses, both of which are sharp at an infinity focus position on a Leica M11-P. Shame, because it's quite a nice looking adapter at a good price point.