The 100-200mm f/5.2 Zoom features a 14 element 12 group design with a focal length range that is ideal for studio use. One lens can be used for full length portraits to head shots eliminating the need to change lenses, synch cords or camera position, throughout a sitting. Because of Mamiya computer aided design and manufacturing techniques, the 100-200mm Zoom provides image performance equal to prime focal length lenses. It offers a choice of helicoid or camera bellows focusing. Applications include studio portraiture, fashion and landscape photography. Equivalent to 48-97mm zoom in 35mm format. FEATURES INCLUDE: Shutter 1-1/400 second X sync at all speeds, equivalent to 48-97mm in 35mm format and Minimum aperture f45.