This wide-angle zoom lens, with an aperture range of f/4.5 to f/32 and 35mm equivalent focal length of 26mm to 43.5mm, is built for use with medium-format PENTAX 645 mount cameras. Addressing common wide angle issues, two aspheric aspects significantly reduce distortion, field curvature, and common aberrations. High-refraction and low-dispersion glass, a three-group floating zoom, and 15.7-inch minimum focus distance assist with maintaining image quality. It features an 82mm front filter thread and an eight-blade diaphragm to balance out-of-focus spots.

Key Features

• 35mm focal length equivalent of 26mm–43.5mm.
• Aperture range of f/4.5 to f/32.
• Angle of view of 80° to 53°, which equates to 65° to 43° on Pentax 645 digital cameras.
• Lens construction of 11 elements in 8 groups.
• Low-dispersion glass elements help to minimize chromatic aberrations and maximize sharpness.
• Accepts 82mm threaded filters.
• Minimum focusing distance throughout the zoom range is 15.7".
• 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.