Here is the professional English description for the Nikon Lens Series E 50mm f/1.8, formatted for a Catawiki auction. Lot Description Title: Nikon Lens Series E 50mm f/1.8 - Compact Pancake Standard Prime Lens Product Description: Up for auction is a classic Nikon Lens Series E 50mm f/1.8, a highly regarded "pancake-style" standard prime lens. Introduced in the late 1970s alongside the Nikon EM, the Series E lenses were designed to be more compact and lightweight than the standard Nikkor line while maintaining excellent optical performance. This lens is the second, improved version of the 50mm f/1.8 Series E, featuring a distinctive silver metal ring on the barrel for better grip and a more premium feel. Its extremely slim profile makes it an ideal companion for compact SLR bodies or for use on modern mirrorless cameras via an adapter. It is known for its sharpness, high contrast, and natural color rendering. Technical Specifications: Focal Length: 50mm. Maximum Aperture: f/1.8. Aperture Range: f/1.8 to f/22. Lens Mount: Nikon F-mount (AI-S compatible). Optical Design: 6 elements in 5 groups. Filter Size: 52mm. Features: Compact "pancake" design, silver-grip ring version. Origin: Japan. Condition Report: Cosmetic: The lens is in very good aesthetic condition. The barrel shows minimal signs of use, and the markings remain crisp and legible. Optical: The glass appears clear and free from significant scratches or fungus. The 7-blade aperture is clean and operates smoothly. Mechanical: The focusing ring turns smoothly across the entire range. The aperture ring clicks precisely at all stops. Note: This is a manual focus lens. As with all vintage optics, minor internal dust may be present. Sold primarily as a high-quality collector's or user's item.