Including a hood, this Pentax smc FA 645 80-160mm f/4.5 Lens medium telephoto zoom lens transitions from 63mm to 126.55mm, with a 35mm equivalent focal length, offers a f/4.5 maximum aperture, and features autofocus extending down to f/32. Improving picture quality, it benefits from multiple low-dispersion glass elements and Super Multi Coating, which blocks out flare and ghosting. Focus as close as 3.3 feet when using this lens, which gives consistency to out-of-focus areas with an eight-blade diaphragm. Photographers may add 77mm filters with the front thread and, when the hood is attached, can easily adjust all by turning the front of the lens.
Features:
The front of the lens can be rotated while the hood is attached, allowing for easy rotation of filters like circular polarizers.
35mm focal length equivalent of 63–126.5mm.
Aperture range of f/4.5 to f/32.
Angle of view of 47° to 21.5°, which equates to 38° to 17.5° on Pentax 645 digital cameras.
Lens construction of 11 elements in 10 groups.
Extraordinary and extra-low dispersion glass elements help to minimize chromatic aberrations and maximize sharpness.
Accepts 77mm threaded filters.
Minimum focusing distance throughout the zoom range is 3.3'.
Super Multi Coating increases light transmission as well as helps to eliminate ghosting and flaring.
Works with both film and digital formats.
Aperture ring and focusing distance scale.
Eight diaphragm blades for smooth out-of-focus areas