The HD Pentax-DFA645 Macro 90mm f/2.8 ED AW SR is a new, stabilised short-telephoto lens designed for use with Pentax medium-format digital and film SLR cameras. Featuring Pentax-original HD coating — a newly developed, high-grade multi-layer lens coating — and the Pentax-designed, lens-installed SR (Shake Reduction) mechanism, this lens offers a focal length of approximately 71mm (or approximately 65mm when mounted on a Pentax 645 film-format camera body) in 35mm equivalence. The HD Pentax-DFA645 90mm f/2.8 ED AW SR doubles as a macro lens with a maximum reproduction ratio of 1:2. As part of the AW (All Weather) series, this lens also features a dustproof and weather-resistant construction with 11 environmental seals. The HD Pentax-DFA645 Macro 90mm f/2.8 ED AW SR will be available from early October, priced at £3,799.99/$4,499.95.