The Nikon 300mm f/2 ED IF Ai-S is a manual-focus super-telephoto prime built for the Nikon F mount, featuring extra-low dispersion glass and internal focusing. Produced in small numbers during the Ai-S era, it was designed for professional sports, wildlife and low-light news photography where its extremely fast f/2 aperture set it apart from contemporaries.

With only a single confirmed UK auction result on file, price discovery is thin: a copy hammered at £3,400 in November 2025, which gives both the high and low of the recorded range and serves as the only median reference point heading into 2026. Because that figure is a saleroom hammer result rather than a dealer asking price, today's retail value of a clean example will typically sit higher once commission, warranty and refurbishment are factored in. Condition, completeness of the trunk case and tripod collar, and clean ED glass are what this lens sells for at the top of its band.