Used this with my medium format Pentax 645N and it took some beautiful shots. Just selling bc I want something a bit lighter. Included some images I took with it to show how great the lens is! Pentax SMC FA 645 45-85mm f/4.5 Lens is standard zoom lens smoothly transitions from wide angle to short telephoto focal lengths equivalent to 35.5mm to 67mm in a 35mm format. Through the zoom range, it maintains a constant f/4.5 maximum aperture and can stop at f/32. Sliding the focus ring forward or backwards quickly lets a photographer change from auto to manual focus, down to a minimum distance of 1.6 feet away. As well, an eight-blade diaphragm creates even out-of-focus areas in images. Features: 35mm focal length equivalent of 35.5-67mm Aperture range of f/4.5 to f/32 Angle of view of 76° to 44.5°, which equates to 61.5° to 36° on Pentax 645 digital cameras Lens construction of 11 elements in 9 groups Accepts 77mm threaded filters Minimum focusing distance throughout the zoom range is 1.6' Works with both film and digital formats Aperture ring and focusing distance scale Eight diaphragm blades for smooth out-of-focus areas
