The Mamiya 645 AF 105-210mm f/4.5 Zoom is a constant-aperture telephoto zoom for the Mamiya 645 AF mount, designed for use on the 645 AF, AFD, AFD II and AFD III bodies. It covers a portrait-to-medium-telephoto range on the 6x4.5cm format, intended for portraiture, location work and longer-reach studio use.

Auction-hammer evidence for this zoom is thin: the only verified UK saleroom result on file is £80 from September 2025, which is what one clean copy was worth at hammer that day. With a single data point, today's market price is best read as a guide rather than a median, and buyers in 2026 should expect condition, completeness of caps and hood, and working AF coupling to swing the figure either way at auction. Cleaner examples with original packaging typically sell for more than stripped, fungus-affected bodies in the same auction market.