Combining traditional lens aesthetics with modern, sleek and efficient lens processes, the Pentax-FA HD 77mm f1.8 Limited Lens offers the scope to capture beautifully sharp and dramatic portraiture. The mid-range telephoto length lens is equipped with two exclusive Pentax lens coatings that are designed to greatly reduce surface reflections, flare, and ghosting. The High-grade HD multi-layer coatings also significantly reduce the appearance of any chromatic aberrations. The Pentax SP coating will help to keep your front lens element clear from water, dust and debris. This lens also features a fast, bright and wide f1.8 maximum aperture that allows for complete control of depth of field and selective focus, as well as affording more versatility when available light begins to fade.