The camera lens is a Cosina MC 20mm f/3.8 wide-angle lens. This vintage manual focus lens was also sold under the Vivitar brand name (as the Vivitar 20mm f/3.8 Auto Wide Angle lens). Key Features Focal Length & Aperture: It is a 20mm prime lens with a wide maximum aperture of f/3.8, stopping down to f/22. Focusing: It features a manual focus design with distance markings in both meters and feet, including depth of field scales. Build & Compatibility: The lens was manufactured in Japan and is available in MD Minolta mount It can often be adapted for use with modern mirrorless cameras. Design: It is known for its compact size, robust build quality, and a close focusing distance of 0.4 meters (1.4 feet).