One very slight note to Pauls excellent listing above. I would not group the earlier Portrait Euryscop f4 with the later purpose built lenses like Eidoscop and Nicola Perscheid. The Euryscop is not soft even at f4. It's black magic how Voigtlander did it but it acts more like a sharp anastigmat while the others were designed to be very soft at f4. Prices haven't been too bad on the Euryscops and I'd hate to see them raised falsely because folks think it's going to work like a Pinkham IV. Beautiful lenses, but not soft focus.