Olympus lenses can be relied on for quality. Smooth manual focus and aperture ring with positive click stops. With max aperture of F1.8 this as a bright lens able to achieve reliable results in most light conditions. The focal length of 50mm is the standard partner for the OM-1 SLR 35mm camera body.  This small, light lens also matches very well via an OM - Nex adapter with Sony E-mount bodies equipped with focus peaking. In very good A condition, optically perfect and with both lens caps.