Nikon 80-200mm f/4 AI-s is a manual-focus telephoto zoom lens for Nikon F mount, designed for 35 mm SLR cameras and also usable on compatible digital bodies, with the operational limitations of different camera generations. The 80-200 mm focal range provides coverage suitable for portraits, compressed landscapes, travel photography, details, events, and medium-to-long-distance shooting. The constant f/4 maximum aperture allows the same exposure to be maintained throughout the zoom range, while the AI-s aperture ring enables manual aperture control on compatible bodies. The optical design consists of 13 elements in 9 groups, with multicoating, and the 9-blade diaphragm contributes to a smooth out-of-focus rendering. The lens uses a push-pull zoom system, with one large control ring used for both focal length adjustment and manual focusing. The minimum focusing distance is approximately 1.2 m, with a maximum reproduction ratio close to 1:4.4, useful for details and close framing, although it is not a macro lens. The filter thread is 62 mm, while weight and dimensions are around 810 g and approximately 162.5 mm in length. Nikon 80-200mm f/4 AI-s is a vintage lens suitable for users looking for a manual telephoto zoom with traditional mechanical construction, constant aperture, and Nikon F system compatibility, while considering that it does not include autofocus, optical stabilization, or modern electronic communication.