I just got my 35mm F2.8 C Biogon (Silver) today in the mail. It comes in at just 204 g. Much lighter than the 50mm F2 Summicron which weighs 350g. I think it's going to be my new normal lens. I now wait for CZ to come out with a longer lens (i.e. 75mm -- 95mm) that's less expensive than the $3k F2 Sonnar. I can live with an F4 if it means something in the <$1k range.