a phenomenal portrait lens (German version) even wide open. Since moving on to DSLR I have considered many times selling this lens but can't somehow bring myself to do so. With an Contax-Canon adaptor I can use it (x 1.6) on my 40D although with manual focusing and stop down metering. This doesn't bother me much - slows me down and makes me think again about photography. Cons? - heavy and that's about it.