This is an early Industar lens with a high number of aperture blades (10), resulting in a natural circular aperture, making it a popular lens. It functions without any issues. It uses high-quality German glass and features the popular "RED P" coating. The glass has a yellowish-green tint. This is a vintage lens. Industar 61 (L39 mount) 52mm F2.8 This is an early model and a popular lens. It functions without any issues. This lens produces images with character. An adapter is included, so you can start shooting right away. Please choose one of the following adapters: Sony E-mount Micro Four Thirds Fuji X Included: Adapter Functions without any issues. Please note that there is a bump on the filter mounting thread. The lens surface has some scratches and dust, but no mold or haze. Test shots were clear and without any problems. You can take pictures that you can't get with modern lenses. This is a Leica screw mount (L mount) lens. It produces vibrant and sharp images. We are now in an era where you can enjoy old lenses with digital cameras. Unlike the sharp photos of today, you can take images that feel like memories. This lens is recommended for those who want to take photos with character! Shipped free of charge nationwide via Sagawa Express.