I wear it for months to fit the Helios 55mm lens onto a Sony A7. It works amazingly, it's metal and feels very sturdy.
17/10/2023
Sturdy connexion, strong build, no light leak. I now have four different models of those (MD, M42, M39 and PK) and am very happy with them. Some complain about the aperture marking from their lens not falling exactly on top of the barrel but slightly on the side... I don't think that it really matters when you know your lens well enough and it's not like they were underneath.
10/10/2023
Okay, I totally misunderstood what this was. Thought it was an EF-M mount, rather than an adapter. So, I can't use it yet. But it's the usual K&F quality, and buyer's experience. Comes packed like fine jewelry. And, the price is nice. K&F is usually a little pricy in the lens accessory category, but this adapter comes in pretty competitively in that department, compared to my other adapters, mounts, and brands of them. K&F for the win.
07/10/2023
Better looking adapter, and as easy to use for Sony E Mount. Clicks onto FD lenses with no hassle, feels sturdy and robust.
25/09/2023