Ok I just got the 2 Kipon adapters, first, they are made in China, I was thinking Japan but no.
First the GFX-Nikon G, nice well made adapter but no like a German Novoflex adapter, nice black inside. Lens mount nice and secure not too tight like my orginal Metabones Sony E mount adapter was, and very good there!
The Kipon GFX- Pentax 645 same very good quality as the GFX-Nikon G, but on both adapters when you move the lens aperture blades good feel but when opening to wide open if you go slow it takes a bit of a push to get 100% open the aperture, not a big problem.
For the same price as the Fotodiox adapters that I have used in the past these are a notch above Fotodiox in quality, but tonight I will have the Fotodiox to compare side by side.
More to come...
Christopher