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 Pentax smc FA 645 55-110mm f/5.6 Lens is a standard zoom lens designed for Pentax 645 mount medium format cameras, both film and digital. It is designed for general shooting and has a standard to medium telephoto field of view with a 35mm equivalent focal length of 43.5-87mm. Also, it has a constant minimum aperture of f/5.6 and can stop down to f/45.
The lens design features 9 elements in 9 groups which feature a Super Multi Coating that prevents ghosting and flaring. For optimal image quality, the 55-110mm uses extra-low dispersion glass elements to prevent chromatic aberrations and maximize contrast and sharpness. Also, the lens will focus as close as 2.6'.
For smooth out-of-focus areas, the lens has an eight blade aperture diaphragm. There is also an 82mm front filter thread.
This lens supports the range from the angle of view of the semi-standard lens to the medium telephoto focal length range suitable for portraits. The compact, lightweight design makes this lens also suitable for handheld shooting enabling you to enjoy large-screen digital photography everywhere from the studio to the field. This lens uses extra-low dispersion (ED) glass for correcting chromatic aberration and a ghostless coating for providing sharp images even under backlit conditions. It features reproducibility with clear, abundant color gradations and high contrast. A flower-shaped hood that is highly effective over the entire zoom range also has a PL filter operation window.
PENTAX 645AF2 bayonet
55-110mm (Equivalent to 43.5mm - 86.5mm in 35mm format)
Angle of View
53° - 28° - 645 Film 43° - 22.5° - 645Z, 645D
9 elements in 9 groups
Min. Aperture (f)
Min. Focusing Distance
Diameter & Length (mm)
Number of Diaphragm Blades
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