The adapter works as expected, I've been able to put some of my Vintage lenses on my Pocket Cinema Camera 4K, which gives that nice vintage look with beautiful Lens flares (obviously depending on what lenses you fit). Very happy with the product, quality is good and it locks on firm to the MFT mount, unlike some other cheaper adapters and speed boosters.
21/01/2020
This is a good quality product. I use it to attach a Minolta MD Rokkor 50mm f1.2 to my Olympus E-M1; that's quite a hefty piece of glass and so one is hoping for a nice, tight fit. That is exactly what I have got - there is no play at all which is very reassuring. Also, infinity focus is perfectly registered. I have adapters for other systems from Novoflex, Metabones, Kipon and Fotodiox, all of which are much more expensive than the K&F Concept adapter but this one is as well-manufactured as any of its more costly cousins and I have no hesitation in recommending it.
14/10/2016