The standard telephoto lens for Mamiya 7 medium format rangefinder film cameras, the N 150mm f/4.5 L Lens is a versatile prime offering a 35mm equivalent focal length of 71mm. Classified as an apochromat, the six elements in five groups design utilizes both low dispersion and ultra-low dispersion glass to significantly reduce both spherical and chromatic aberrations for a high degree of clarity and sharpness. Additionally, a proprietary multi-coating has been applied to control lens flare and ghosting for increased contrast when working in strong lighting conditions. A manual focus design permits working with subjects as close as 5.9' away and both depth of field and distance scales are printed on the lens body for using hyperfocal and zone focusing techniques.