The new Zeis probably are of the same quality. But some old Zeis, which were very expensive years ago, may be superior. It seems that some Canon uses are buying these old lenses to use on Canon EOS. Some are doing the same with some of the old and high quality Nikor lenses. The Nikor 55mm f/1.4 was a great lens. I still have one of them along a Nikon F3 HP. http://www.pebbleplace.com/Personal/Leica_db.html