{"product_id":"canon-ef-17-40mm-f-4l-usm-lens","title":"Canon EF 17-40mm f\/4L USM Lens","description":"\u003cdiv\u003e\r\n\u003cdiv class=\"text-regullar\"\u003e\u003cstrong\u003eShort Description\u003c\/strong\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"text-regullar\"\u003eEF Mount L-Series Lens\u003cbr\u003eAperture Range: f\/4-22\u003cbr\u003eThree Aspherical Elements, One Super UD\u003cbr\u003eUltrasonic Autofocus Motor\u003cbr\u003eManual Focus Override\u003cbr\u003eWater and Dust Resistant\u003cbr\u003eInternal Zooming and Focusing\u003cbr\u003eTruly Circular Diaphragm\u003cbr\u003e77mm Front Filter Diameter\u003cbr\u003eRear Holder for Three Gel Filters\u003c\/div\u003e\r\n\u003cp class=\"text-regullar\"\u003e \u003c\/p\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\u003cdiv\u003e\r\n\u003cdiv class=\"text-regullar\"\u003e\u003cstrong\u003eIn The Box\u003c\/strong\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"text-regullar\"\u003eCanon EF 17-40mm f\/4L USM Lens\u003cbr\u003e\n\nE-77 II 77mm Lens Cap\u003cbr\u003e\n\nLens Dust Cap E (Rear)\u003cbr\u003e\n\nEW-83E Lens Hood\u003cbr\u003e\n\nLens Case LP1319\u003cbr\u003e\n\nLimited 1-Year Seller Warranty\u003c\/div\u003e\r\n\u003cp class=\"text-regullar\"\u003e \u003c\/p\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\u003cdiv\u003e\r\n\u003cdiv class=\"text-regullar\"\u003e\u003cstrong\u003eLong Description\u003c\/strong\u003e\u003c\/div\u003e\r\n\u003cdiv class=\"text-regullar\"\u003eSpanning a versatile wide-angle range, the EF 17-40mm f\/4L USM Lens is a Canon L-series zoom featuring a constant f\/4 maximum aperture along with a sophisticated optical design and durable construction. One Super UD element is featured, along with three aspherical elements, which help to reduce both chromatic and spherical aberrations in order to realize high sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast in difficult lighting conditions. Complementing the imaging capabilities, this wide-angle zoom also features a ring-type USM and internal focusing mechanism to afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying environmental conditions.\u003cbr\u003e\u003cbr\u003eWide-angle zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 27.2-64mm equivalent focal length range.\u003cbr\u003e\u003cbr\u003eConstant f\/4 maximum aperture maintains consistent illumination throughout the zoom range.\u003cbr\u003e\u003cbr\u003eOne Super Ultra-Low Dispersion glass element noticeably reduces color fringing and chromatic aberrations for high clarity and color fidelity.\u003cbr\u003e\u003cbr\u003eThree aspherical elements minimize spherical aberrations and distortions for improved sharpness and accurate rendering.\u003cbr\u003e\u003cbr\u003eSuper Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.\u003cbr\u003e\u003cbr\u003eA ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.\u003cbr\u003e\u003cbr\u003eRounded seven-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.\u003cbr\u003e\u003cbr\u003eAs a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.\u003cbr\u003e\u003cbr\u003eIn addition to the front 77mm filter ring, this lens also has a rear filter holder for up to three cut gel filters.\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e","brand":"Canon","offers":[{"title":"Default Title","offer_id":50376488681787,"sku":"CN1740F4LUSMGPHXSHOP","price":519.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0924\/7362\/2843\/files\/136229.jpg?v=1750111941","url":"https:\/\/phoenixphoto.com\/products\/canon-ef-17-40mm-f-4l-usm-lens","provider":"Phoenix Photo","version":"1.0","type":"link"}