I have had the same experience with the M42-Nex adapter.

bought the adapter for a Canon FD on my Sony Alpha and am very satisfied. It is important for the aperture that you set the adapter to "Lock" yourself when adapting, otherwise changes to the aperture have no effect. Has replaced my previous adapter because the quality is significantly better. Processing is 1A, no wobbling or similar and I see no stray light even with longer exposures at night.

I bought the Canon FD Adapter for my Sony Alpha and am very happy with it. For the aperture, it is important to set the adapter to 'Lock' when adjusting, otherwise changes to the aperture will have no effect. Has replaced my previous adapter because the quality is much better. The processing is 1A, no fluctuations or the like and I don't see any stray light even with longer night shots.

This adapter opens the lens of my Leica camera with a Canon lens

don't normally give 5 stars in these reviews but this lens almost made my old Nex 3 feel like a new camera. For taking pictures of people, it's head and shoulders above any other NEX lens I've tried (this is my fourth lens). Essentially, the f1.8 aperture lets in so much light that the camera (along with image stabilization) can use faster shutter speeds to get a specific shot, which means a lot less blur and, in practice, beautifully sharp images. The f1.8 aperture also defocuses the background of the shots, making for simpler compositions that emphasize the main subjects in the frame. Also unlike many fast Primes, this pen is sharp down to F1.8. Of course, the 75mm equivalent focal length makes this a single-purpose lens, but don't let that put you off - it's a purpose that most people will need plenty of, and there's nothing wrong with doing one thing well. Here is a real example: Last year I went to a wedding. A nice occasion but the ceremony was indoors and it was a dull gray day. I used the stock zoom lens that came with the Nex (the 18-55mm) and none of my images came out all day; they were all blurry because people were moving too fast and I couldn't react in time to catch fleeting moments and that was because the zoom lens can only do about f5 at its 55mm zoom end and in any case it is on this one Focal length not very sharp. Last weekend we celebrated my little son's christening. A nice occasion but the ceremony was indoors and it was a dull gray day. I used this lens and every single one of my photos came out perfect - beautiful. No need for flash, no need for high ISO. I was even happy to set the camera to the default settings and let my friends take photos for me because I trusted the lens to get a good picture. I've never done that before! One thing I've found is that I have to go a step further backwards than I'm used to because the lens can't focus close-up. You must be a few feet away from your subject. In every other respect, this is the best money I've invested in photography since buying the camera. I was nervous about buying this as it's more expensive than the entry-level lenses in the Nex range. It turns out there's a very good reason for the difference - it just has a much better "success rate" for getting the right photo first time than any other lens I've used; it complements the money I originally invested in the Nex camera and adds another dimension it didn't have before.

The product meets my needs to serve as an adapter from a Nikon lens to my Canon camera. The only problem has been that I had to do a lot of research to make sure the lens worked. In the product description they are not too specific. Otherwise perfect and received within 12 hours of ordering

I still had two prime lenses from my film camera, a 28mm and a 50mm with filters. The adapter works fine, I've attached a photo (the one with the flowers) I took with it and the 28mm lens. It focuses to infinity and the sharpness is ok (UV filter was on). Focus and aperture must of course be set manually. But you have to make sure to set the adapter to "Close", otherwise the lens remains open, you cannot adjust the aperture and light comes through. I use this sometimes to create a "soft glow" effect like in the photo with the sofa.

I think it's a well machined adapter that works very well.. I tried it on a M42 35mm and a 135mm lens .. I was surprised at the quality of images I was able to get on my Sony A7ii and Sony 6000... Well worth the investment.