The Leitz 800mm f/6.3 Telyt-S is an ultra-long telephoto lens designed for the Leica Visoflex reflex housing system, aimed at wildlife, sports and long-distance subjects where extreme reach was required. As one of the longest focal lengths Leitz catalogued for its rangefinder-derived reflex setup, it sits firmly in the specialist, low-production end of the Leitz telephoto range.

At recent UK auction, hammer prices for the 800mm f/6.3 Telyt-S have ranged from £3,000 to £4,000, with the two recorded saleroom results giving a median around £3,500 — these are wholesale hammer figures before commission, not retail asking prices. Given how rarely the lens surfaces, what a clean example is worth today in 2026 depends heavily on completeness of the original shoulder stock, grip and case, and on glass condition, with tatty outfits sitting near the lower end and fully-kitted sets pushing toward the upper figure.