The Schneider Kreuznach 120mm LS f/4.0 Macro (Phase One) is a macro lens designed for Phase One medium format cameras. The lens is very sharp and has almost no distortion. Thanks to the leaf shutter there is little distortion and it is possible to achieve a flash sync of 1/1600. The lens is perfect for product photography, close ups and wildlife photography with little depth of field and a nice round bokeh. 

Furthermore, the lens is composed of 9 elements in 8 groups, and has a minimum focusing distance of 37 cm. 

The dimensions of the lens are 107 x 91mm, it has a filter size of 86mm and it weighs 960g.