I haven't tested the adapter yet, but you're late. It seems of good quality but the price is a bit abusive in relation to the others of the same brand. I think it's because it's a relatively new camera model.
09/05/2023
The item arrived two days early, so bonus points for that. First impression: It looks well built, sturdy and does what it says on the tin. I can now use my Carl Zeiss Planar T 50mm f/2 on both my Leica M3 and Nikon Z6II. So far so good. Now, if you'll excuse me, I'm using the adapter.
08/05/2023
Good overall finish, like other rings I've bought from the same manufacturer. The only downside, I had a little trouble removing the ring from my Leica lens, especially since we're a little grippy. It remains to be seen when a small game with more usage comes along...
07/05/2023
I've always had a good time with K&F adapter rings and this is no exception. Excellent quality, lightness, robustness, no games, flawless operation. Completely satisfied.
06/05/2023
Precise design, very small imperfection in the tolerance of the attack on the lens
04/05/2023