I have the Contax EOS adapter manufactured by ZOERK. The adapter\nexhibits a real problem: it can't hold tight certain lenses- and most\nimportant is the 85 1.4 PLanar (German.) The lens can easily slip away\nfrom the adapter-body. Now I have to look for a new adpater because\nthat particualr lens is awsome, plus, I'm not impressed by Canon\nlenses. I was wondering if anybody ues that particular lens on EOS,\nand hence, which adapter?\n\nregards to all, J.