Earlier i did a test and mini review for this lens. Rare lens for sale. It was made for some kind of reproduction machines and covers huge 12x18 cm frame. Probably another bad copy of industrial Zeiss or Nikkor (as all things done in USSR). It covers 12x18 cm frame, its not super sharp on tiny s16 sensor in regular (not macro) mode. The good thing about this lens is that in macro mode you can be very very far from object. It has perfect round bokeh at any F-stop and very flat and even image area. Works well for macro and for landscape too. Iris is smooth, glass is very clear. If needed i can d