TECHART LM-EA9 Auto Focus Lens Adapter Built-in Drive Motor Compatible with Sony E-Mount Camera A9 A9II A7IV A7C A7RIV A7RIII A7II A7m2 A7m3 A7RII to Leica M/Zeiss M/Voigtlander M Mount Lens

Works as intended. The build quality is solid and all metal. Although a little expensive, it truly opens up a massive library of M lenses that you can use on your Sony cameras. I have tested this on my Sony a 7R3A and on my A7RV. On both bodies, it performed as I expected, though not as good as a native lens when it comes to tracking. One of the neat perks when using this device is the ability to close focus. I really like this feature as some of my M glass minimum focus distance is really long. Very happy with this purchase.

Rear cap was difficult to remove. When it was removed the pins from the cap were bend and the rubber around the contacts was stripped.

It did what it said it would do...for just over a month. Then it stopped functioning just after the return window. I wanted to love this product, but it no longer focuses and no longer works. $400 paperweight. UPDATE! So it turns out it was a firmware issue. Found instructions to roll back the firmware, set the f stop to 99, press the back focus button and take a photo, set it back to F 2 and it worked again! Find the instructions online. While annoying, the fact it works again brings it back to 5 stars. Has not given me any issues since.

Not sure what’s with the negative reviews but this works perfectly! With these pictures, I’m using a Sony a1 with a 35mm Summilux lens from Leica. Obviously the photos taken from my Leica are a little better but with a little editing, the photos will be near identical. I put the Techartpro to the test by taken pictures of moving objects and they didn’t come out bad at all. I would say for 400$, it’s worth the price hefty price tag. One thing I would change is having a clear instructions manual. It’s confusing and would recommend looking tutorials on YT

I did not buy this on Amazon but a used one from elsewhere. On receiving it I was excited to try it on my Sony camera but it did not work. I took it out and noticed four of the electronic connections were scratched. It did not happen to the older version on the same camera. I could not figure out what caused these scratches. I believe it is a common problem for this new version as the photograph of another one sold as parts had the same scratches! I believe if you twist it the wrong way would cause it to be scratched. Now I understand why there are more of this new version sold for parts than the old version!

I have a TTArtisan 50mm F0.95. That lens is so dreamy because of its F0.95, and which that being said, manual focus with that wide F stop is really hard. This adapter solve that problem. Even tho that lens really heavy, heavier than the supported weight recommend, the adapter still able to perform the AF. But usually I use my hands to support the weight, so the adapter won't have to work hard. The AF is def faster than you manual focus, but don't expect it to be native level. This adapter is expensive, but for someone who wants to use F0.95 without manual focusing, it is a great adapter.

I had stopped using manual lenses (too much effort, too slow a process), but this adapter has resurrected their use for me. This adapter is more fragile than it seems. Best to take care when you use it.