Thanks guys! Yes, it is a great lens. The lens has a manual focus ring which is very nice, has a slight bit of play in it though. I replaced the mount plate with a modified nikon-eos adapter which I redrilled to work with the ZA mounting holes. Aperture control is rudimentary by moving piece of cardboard/paper wedged against aperture ring post on inside of lens. I usually shoot it wide open or at ~f2.2.
Yes, I think the 2nd one was shot with a tube. I'll try to post some more soon.