Sigma 17mm F4 DG DN Contemporary Series Ultra-Wide-Angle Lens for Sony E Mount. Condition: Brand New in Original Packaging. 17mm ultra-wide angle lens for Sony E Mount. Compatible with high-speed autofocus and AF assist. Full-frame lenses offer new value to mirrorless systems. Mount features a dust and splash-resistant structure. Designed to minimize flare and ghosting. Undergoes Sigma’s MTF measuring system to ensure high quality. 7-blade rounded diaphragm delivers an attractive blur. Features a high-precision, durable brass bayonet mount. Comes with an LH576-03 petal-type lens hood. Includes an LCF55-01M magnetic metal lens cap. The Sigma 17mm F4 DG DN Contemporary Lens for Sony E Mount features an ultra-wide-angle lens that matches the optical performance standards set by the Sigma contemporary line of lenses. It is a compact, lightweight, and high-performance ultra-wide-angle lens. Using the latest technology, the 17mm had been created without compromise, despite its challenging design concept. Its wide-angle of view creates impactful landscape images with a unique perspective and, thanks to its minimum close focusing distance of 12cm, the lens can be enjoyed in a variety of alternative ways, including close-up photography and hand-held selfies. The optical design has been created exclusively for mirrorless camera systems, which helps reduce lens flare and ghosting that resulting in excellent image rendering. The all-metal lens barrel highlights Sigma’s craftsmanship and attention to detail, making the Sigma 17mm F4 DG DN Contemporary Series Lens for Sony E Mount a pleasure to use on every shoot. Ultra-Wide-Angle Lens that Matches the Optical Performance Standards Set by the Sigma Contemporary Line of Lenses. The lens construction consists of two SLD glass elements and three aspherical lens elements. Aspherical lenses are used for both the front and rear optics. This not only keeps the size of the lens compact but also helps with correcting lens aberrations. As a result, the lens features a 55mm filter thread (which is smaller than comparable lenses of similar focal lengths) which makes it easy to change filters between Sigma I series lenses that share the same filter size. Its construction also helps minimize flare and ghosting that is commonly found in ultra-wide-angle lenses, creating clear images in any environment. This is a lens with truly modern performance, thanks to the advanced processing and production technologies at SIGMA’s only production facility in Aizu. A highlight of using the 17mm is the impressive minimum focusing distance of 12cm. Capture close-up macro-style images in remarkable detail with expansive backgrounds. It is also suitable for selfies and vlogging, where items need to be shown at arm’s reach. A quiet, high-speed stepping motor drives the AF delivering fast and accurate results in both stills and video. Beyond Beautiful Pictures – the Value Provided by the Sigma’s I Series. The Sigma I series feature full-frame compatible lenses that offer new value to mirrorless systems. The combination of superb optical performance with a level of compactness that is perfectly suited to smaller and lighter modern mirrorless cameras will bring you new opportunities for a perfect shot. Sigma’s excellence in development and production technologies has been built up since its founding in 1961 and became increasingly sophisticated with the introduction of the Sigma Global Vision brand in 2012. With this as a base, Sigma has given careful thought to the quality of the products, the feeling of using them, and the pleasure of owning them. This is how the I series was born. Exceptional I Series Build Quality with a Compact Form-Factor. This I series lens has an all-metal construction. The precision-cut aluminum parts not only give the barrel a sleek, stylish finish but provide superb durability that improves the quality of the entire product. Metal materials are also used in internal structures that slide with the operation ring for added robustness. These high-precision components crafted with Sigma’s cutting-edge metalworking technology are also used in Sigma’s Cine Lens line-up for professional cinematographers and provide a tactile, ergonomic feel that makes the lens a pleasure to use. What is more, with the I series is that this high build quality is condensed into a palm-sized lens body. The Sigma 17mm F4 DG DN Contemporary is one of the smallest in the series. Combine with multiple I-series lenses to create a remarkably compact shooting system that is lightweight and small in size. What’s in the Box. Sigma 17mm F4 DG DN Contemporary Series Ultra-Wide Angle Lens for Sony E Mount. LCF55-01M Magnetic Metal Lens Cap. LH576-03 Petal Type Lens Hood. Sigma 17mm F4 DG DN Contemporary Series Ultra-Wide Angle Lens for Sony E Mount with Lens Cap and Hood. Lens construction: 9 elements in 8 groups (2 SLD and 3 aspherical elements). Angle of view: 103.7 degree. Number of diaphragm blades: 7 (rounded diaphragm). Minimum focusing distance: 4.8 inch (12 cm). Maximum magnification ratio: 1:3.6. Filter size: 55 mm diameter. Dimensions (maximum diameter x length): 2.5 x 1.9 inch (64 x 48.8 mm). Weight: 7.9 oz (225 g). F There are product categories which are not returnable due to hygienic or sanitary as required by manufacturers. In an event where there is an error regarding a price error or description, we will notify you ASAP. Items removed from their’blister-pack’ display packaging are non-refundable. Please let us know how we can make yours a five-star rated one too! Our goal is to make sure you are customer 100% satisfied with your order.