The Petzvar 4/120 is a medium format pictorial Petzval lens with central leaf shutter for Hasselblad 500 and 200 series. As I described in my first project description, the Petzvar lens uses a genuine Petzval scheme: two achromatic groups of elements. This classic design has not been redesigned, or improved and it retains the design's inherent flaws and imperfections we prefer to call this character. The Petzvar lens was designed primarily as a portraiture lens, but it can be used as a pictorial lens for landscape photography as well, as stopping down reduces the Petzval design's inherent wide-open charachteristics, while increasing contrast and sharpness.