Olympus OM-System Zuiko MC 28mm f/2 - Focal Length: 28mm - Maximum Aperture: f/2 - Lens Type: Prime Lens This lens was purchased by my father, who owned many cameras, but he rarely used it, keeping it in a case like a wine cellar. The lens appears to be in very good condition, with no scratches or cloudiness when examined with the naked eye under fluorescent light. If you have any questions, please feel free to ask in the comments, and I will answer to the best of my ability. I will ship within 3 days whenever possible, but there may be some delays due to work. I apologize, but I am a novice with no knowledge of cameras. Please understand this, and I request no returns or refunds. Thank you for looking.