[Aluminum] The Nikon F to Canon RF works if you have a lens with manual aperture adjustment. I bought it for the Zeiss Milvus 15mm lens and it works fine with it.

[Aluminum] will not work on caamera automatic settings,but it does what I wanted,very satisfied

[0.375 lb] Love it! Priced right, arrived earlier than expected.
Easy to use... very satisfied.

[Aluminum] This is an excellent adapter. Very solid and well built and fits tightly... no wobbles of any sort.

2 errors from Urth on this adapter though: I have added photos highlighting this

1. On the Nikon Z teleconverter mount, there is a small notch in the adapter ring which is absent on the back side of the Urth adapter.

Therefore if you intend to use this adapter with Nikon Z teleconverter and Nikon F lens (Nikon's FTZ adapter cannot be used because the adapter hole does not allow the Z teleconverter protruding element to pass through); so if you intend to use this adapter with Z teleconverter, you will have to grind out the notch either in the teleconverter mount ring (not recommended) or grind a notch into the back side of the Urth adapter... recommended as it costs only 39$.

2. Additionally, Urth has unnecessarily put a very small screw on the back side of the adapter which also prevents it from screwing into the Nikon Z mount. We need to remove this screw as well.

Urth needs to made these 2 updates to their future adapter manufacturing runs.

I am now able to successfully use a Nikon Z camera plus Nikon Z teleconverter + Urth adapter and Nikon F lens in manual focus mode.

[Nikon Z] At the time of purchasing this product (and as I write this) there was only one review (which gave it 1 star). I feel somewhat compelled to balance that out. I'm using it with two older f-mount lenses (Nikon & Tamron) and they both work great! They fit incredibly well with a solid connection and I have no complaints whatsoever with this product. It does it exactly what it's supposed to do, and it seems to be made to last. Enjoy!

[Aluminum] Works well

[0.375 lb] I am using this adapter on my M50 mark II to adapt a Pentax-M SMC f1.4 50mm lens. The adapter is well built, sturdy, and although the lens release lever feels a little stiff, has otherwise good ergonomics. Using a vintage lens has been a lot of fun, especially since my M50 had just been gathering dust after I acquired a much older, but better performing DSLR. Manual focus Pentax lenses especially can be found quite cheaply, and on the APS-C sensor of my camera perform exceptionally well under good conditions.

[0.375 lb] Got this to adapt my collection of Takumar lenses for my new S1H. This adapter feels perfectly sturdy and does what it was designed to do. Extra meaningful because it let me adapt lenses left from my late grandfather. Definitely the adapter to get for Leica L-mount cameras.

[0.375 lb] Nicely built product. Works well!

[Aluminum] This lens mount adapter will certainly get the job done. Don't waste money on the more expensive ones. Just make sure on your EOS-M camera to go to MENU Function settings (tab 5) Custom Functions (C.Fn) and select Enable for release shutter w/o lens. This is how the camera will allow you to take pictures with the Pentax lenses.