Pentax 645 LS 135mm f/4
Prime / pentax-645
Prime / pentax-645 / 645
A standard prime lens for the Pentax 645 medium-format system, featuring a built-in leaf shutter (LS). It offers a 75mm focal length and a bright f/2.8 maximum aperture, and can be used with Pentax 645 series bodies. It is well suited to studio and strobe photography where the leaf shutter is useful.