OK, today my "Falcon" branded Samyang arrived from Poland (via ebay).
I quickly (and I mean quickly) attached the lens to my older Canon 10D 6.3mp DSLR camera and placed it on a Nodal Ninja 5 panohead (found the NPP) and raced out and shot this panorama
before the wife pinched the Jag to go to an appointment.
I shot this pano at f/11.0, 3 brackets -3ev, -1ev, +1ev, 6 shots -15 degrees and 1 shot +70 degrees.
No editing has been done other than processing the RAW files, Stitching/Fusing and cloning out the tripod.
Just remember it is 100% manual focus and manual aperture. There are no electrical contacts between the lens and camera and thus no camera feedback.
I would have no hesitation recommended this lens at all. It would have to be the best value fisheye on the market at this stage.
Just for interest sake, I paid $295.00 USD delivered.