Lens Lab
    Ricoh Rikenon 50 mm f/ 1.7 Auto
    Ricoh Rikenon 50 mm f/ 1.7 Auto

    Ricoh Rikenon 50 mm f/ 1.7 Auto

    50mm · f/1.7

    Overview

    The Ricoh Rikenon 50mm f/1.7 Auto is a sharp, fast prime lens from the 1980s, known as one of Ricoh's best. It offers good sharpness even wide open at f/1.7, and some users prefer it over Pentax's equivalent. Build is mostly plastic with a metal rear mount; it has an auto-aperture that only works on Ricoh bodies and a problematic pin that can lock on Pentax digital bodies. It suits budget-conscious shooters seeking a sharp 50mm for Ricoh or adapted use, but requires pin removal for Pentax compatibility.