This 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. It uses a 3-group zoom system for providing high delineation performance that is stable over the entire zoom range. It offers a minimum shooting distance of only 0.5m. The MF operation can be performed quickly to allow for fine focus adjustments.
Minimum Aperture: f32
Lens Construction: 11 Elements in 9 Groups
Minimum Focus Distance: 0.5m
Lens Mount: Pentax 645
Filter Size: 77mm