Nikon's fast pro tele zoom — the manual-focus Ai-S Zoom-Nikkor 80-200mm f/2.8 ED, constant aperture.
The Ai-S Zoom-Nikkor 80-200mm f/2.8 ED is a fast telephoto zoom for the Nikon F system, introduced in the early 1980s to the Ai-S standard. The ED designation marks extra-low-dispersion glass used to control chromatic aberration, and the constant f/2.8 aperture across the range made it a professional-grade sport and portrait zoom.
This is a manual-focus Nikon F lens with a constant maximum aperture of f/2.8 across an 80-200mm zoom range, built to the Ai-S standard and incorporating ED glass for reduced chromatic aberration. It operates with normal reflex viewing. Only the verified focal range, aperture, ED designation and mount are stated; further construction details are omitted.
The ED glass and constant f/2.8 aperture give strong sharpness and contrast with well-controlled colour fringing across the telephoto range. It suits sport, action, wildlife and portraits where a fast, consistent tele zoom is wanted, allowing shallow depth of field and fast shutter speeds. Rendering of out-of-focus areas is smooth for a zoom.
On the used market this constant-f/2.8 ED zoom is sought after and holds solid value as a professional manual tele zoom. Inspect the elements for haze, fungus and separation, check coatings, confirm the aperture blades are dry, and test the zoom and focus for smooth, tight action. It adapts to mirrorless where its fast constant aperture keeps it useful for portraits and action.