The 90mm Makro-Kilar was the second macro produced by Kilfitt. The first was the 40mm which we also house here at One Stop Films. The 40mm Macro only covered the format of 35mm cameras. For the 90mm Macro, the medium format Makro-Kilar, they chose a focal length that was a little longer than that of standard lenses to cover 6×6 medium format cameras. With both the 90mm and 40mm lenses there is a very unique circular bokeh.