Features and Functions: Micro Four Thirds | f/1.8 to f/22 34mm (Full-Frame Equivalent) One DSA Element, Two Aspherical Elements One High Refractive Index Element IPX1-Rated Design and ZERO Coating Rounded 7-Blade Diaphragm Movie & Still Compatible AF System Description: The OM System M.Zuiko Digital 17mm f/1.8 II is a versatile and durable wide-angle lens for Micro Four Thirds cameras. Its wide f/1.8 aperture allows you to capture images with beautiful, soft backgrounds, and its pan-focus capabilities help you keep everything in the frame sharp. The lens is built for the outdoors, with an IPX1-rated splash and dust-proof design that lets you shoot in all kinds of weather. For excellent image quality, the lens features a specialized ZERO coating that minimizes ghosting and flare, so your photos stay sharp and clear even in bright light. Inside, its compact design packs nine elements in six groups, including specialized DSA and HR elements that significantly reduce distortion and other aberrations. The Movie & Still Compatible (MSC) autofocus system provides fast and quiet focusing, making it a great choice for both video recording and still photography.Items Included: OM SYSTEM M.Zuiko Digital 17mm f/1.8 II Micro Four Thirds Lens LH-49B Lens Hood LC-46 Lens Cap LR-2 Lens Rear Cap