I have been mulling over a K mount lens to Samsung NX body adapter for a long time, There were a few things holding me back. The cheap ones vary from sample to sample. Some do not line up lens and sensor in a parallel way, which is bad for IQ. Some samples do not activate the micro switch that tells the camera that a lens is attached. More expensive ones are better, but they are
uhm more expensive. At the top of the tree is Novoflex. Their quality is top notch I suppose, but the prices are just out of my league. Ebay sellers promise delivery in 45 working days. Other sellers charge more for delivery that the adapter.
A local seller offers one on an auction site. He doesn't actually keep stock but will order one on your behalf. His ad shows a K mount adapter but the description is about an Olympus mount. I contacted him and he assured me that it is indeed K mount, but did not bother to correct his ad. There is a "make offer" in the ad. I did that and he came down $2 in his price. What a generous fellow!
I finally did something about it. The one K mount lenses that I would really like to try on my Samsung cameras is my Rokinon 85mm f/1.4. The thing is, it would be an all manual affair. Focus aids n the Samsung would probably not work. My solution was simple. I bought a used Samyang 85mm f/1.4 in NX mount from B&H. It is said to be in 9+ condition and was a nickel short of $170. How could I resist?
As for the adapter, it will have to wait a little longer.