Good morning, Haring;
If I may suggest an alternate place, you might find many more people who recognize that lens, have it, or did have it, and can comment on it, over on DelphiForums.com and the group "The Kiev Report" where Rick Denney is the main host.
It was a lens I considered for a purchase, but before I could get to the point where that would be a real possibility, the Hartblei people changed. They joined with another group and their $600 USD lens became a $3,000+ USD lens. I did not buy one of the new ones.