Pentax FA 645 55-110mm f5.6

Designed for use with film and digital PENTAX 645 mount medium-format cameras, this standard zoom lens features a standard to medium telephoto view of 43.8mm to 87mm, for 35mm equivalent focal lengths, and a constant minimum aperture of f/5.6, which goes down to f/45. The compact, lightweight design makes this lens also suitable for handheld shooting everywhere from the studio to the field. Super Multi Coating prevents ghosting and flare, while extra-low dispersion (ED) glass elements block chromatic aberrations and improve contrast and sharpness. To take the image you want, the lens allows you to get as close as 0.8m and offers an eight-blade diaphragm for out-of-focus areas.