Unfortunately, the massive ring of the M42 on EF touches the AF contacts of the Viltrox Speedbooster and causes me to get an error message on my GX9. This problem does not occur with the P/K on EF from K&F because it has a slimmer design. Therefore 2 stars deduction. A successor to the adapter should have a recess at the height of the AF pins, I'll see how I can DIY my adapter.
23/07/2022
So far so good. Although I have slight doubts over its critical focus abilities with super wide angle lenses which is the tell tale sign of not being micro-millimeter perfect.
23/07/2022
Well made product, it works optimally. Beautiful presentation in the dedicated box. To the touch you can perceive the quality and the excellent workmanship of the workmanship. Indispensable for lovers of vintage lenses.
23/07/2022
The adapter can be easily used on both the camera (450D) and the lens (Tessar 4/135 from CZJ). The lens is about 60 years old and I was curious to see if it would still be possible to take pictures with it. This can be confirmed with "yes". Of course you have to do without automatic functions, you can only do it with manual exposure and focus adjustment, as it used to be. As far as the connection to the camera or lens, which has been mentioned several times, cannot be separated again, minimal lubrication BEFORE first use is announced and solves this "problem" before it arises.
19/07/2022
Flawless and effective product.
I finally mounted a Helios 44M lens (look for it and buy it too - results from prime lens) which, with another K&F adapter (EOS / M42), I can also use on GX80.
Punctual and reliable.
Very satisfied.
I finally mounted a Helios 44M lens (look for it and buy it too - results from prime lens) which, with another K&F adapter (EOS / M42), I can also use on GX80.
Punctual and reliable.
Very satisfied.
19/07/2022
It's silver metal, and it's cool when you put it on. It comes in a plastic storage case, so it is convenient to carry when removed.
19/07/2022
The mount adapter is not permanent. I mean, once you put it on the lens, there is a way to remove it and switch it to another lens if you need to. I got this for a Nikon mount lens that I wanted to put on my canon mirrorless. It snaps on solid and secure. Holds the lens on the camera really nice. No shake or play. There is a small tab/button that you have to press in order for it to release from your lens. The release is a little tight but nothing that can't be handled by a 13 year old or older.
17/07/2022