Pentax smc FA 645 33-55mm f/4.5 AL Lens.
The Pentax smc FA 645 33-55mm f/4.5 AL Lens is a wide-angle zoom lens designed for use with medium format Pentax 645 mount cameras. It features an aperture range of f/4.5-32 and has a 35mm equivalent focal length of 26-43.5mm, providing a very useful range of wide-angle lengths. This lens in particular utilizes two aspherical elements that greatly reduce distortion, field curvature, and coma aberrations common with wide angle lenses.
Highlights:
Pentax 645 Mount
26-43.5mm (35mm Equivalent)
Aperture Range: f/4.5-32
Two Aspherical Elements
Low-Dispersion Glass Elements
Construction: 11 Elements / 8 Groups
Minimum Focus Distance: 15.7"
Eight Blade Diaphragm
Front Filter Thread: 82mm