Jupiter-21M is a high-quality Soviet telephoto lens, known for its sharpness and image quality. This lens is a great choice for collectors and photographers. Specifications: Focal length: 200mm. Maximum aperture: f/4. Minimum aperture: f/22. Optical design: 5 elements in 4 groups. Mounting type: M42 (can be used with various cameras via adapter). Focus: Manual. Minimum focusing distance: 1.8 meters. Filter diameter: 49mm. Weight: about 980 grams. History and Origin: The Jupiter-21M lens was first released in the USSR and quickly gained popularity among photographers due to its quality and versatility. 📦 Equipment: Lens "Jupiter-21M", 200mm f/4. Protective lens cap. 🚚 Delivery: International delivery with track and trace. Delivery times are from 15 to 22 days. All parcels are insured against loss. 🔒 Safe Payment: Payment through eBay's secure payment system. 📩 Contact the seller: If you have questions about Jupiter-21M or want to know more, please contact me.