The lightweight voigtlander 21mm f4 vm color skopar pancake lens is designed for use with the voigtlander bessa r4mr4a cameras and other cameras with a leica m mount it features a wide 91 angle of view a minimum focus distance of 05m and a 9 blade circular aperture diaphragm that delivers beautiful bokeh in out of focus areas this ultra compact lens weighs just 136g