OLYMPUS OM-SYSTEM G.ZUIKO AUTO-S 50mm f/1.4 prime lens, compatible with OM mount. - Brand: OLYMPUS - Model Name: OM-SYSTEM G.ZUIKO AUTO-S - Focal Length: 50mm - Maximum Aperture: f/1.4 - Lens Type: Prime - Mount Type: OM Mount Thank you for viewing. The exterior shows some signs of use, but is relatively clean. The focus ring is smooth. The aperture ring has a good click feel. No oil stains on the aperture blades. The lens has been cleaned, but there may be some minor dust. No mold or haze, and the lens is clear. Included accessories: Lens caps (front and rear) If you have any questions, I will answer them to the best of my ability. Thank you.