{"product_id":"canon-ef-17-40mm-f-4l-usm-lens","title":"Canon EF 17-40mm f\/4L USM Lens","description":"\u003cp class=\"mText\"\u003eAn impressive ultra-wide-angle prime, the \u003cstrong class=\"h1Lit\"\u003eCanon EF 17-40mm f\/4L USM Lens\u003c\/strong\u003e is a lens well-suited for landscape, nature, and interior photography applications. Its relatively bright f\/2.8 maximum aperture is well-suited to working in difficult lighting conditions and also makes this lens an ideal choice for astrophotography. The optical design incorporates two aspherical elements and two ultra-low dispersion elements to control both spherical and chromatic aberrations in order to realize a high degree of sharpness, clarity, and colour accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and colour fidelity when working in backlit and harsh lighting conditions. A ring-type USM and internal focusing mechanism also 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 climates.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eUltra wide-angle 14mm prime is compatible with full-frame Canon EF-mount DSLRs, as well as APS-C-sized models where it will provide a 22.4mm equivalent focal length range.\u003c\/li\u003e\n\u003cli\u003eBright f\/2.8 maximum aperture benefits working in low-light conditions and suits astrophotography applications.\u003c\/li\u003e\n\u003cli\u003eTwo ultra-low dispersion elements are used to minimize chromatic aberrations as well as eliminate colour blurring around the edges of subjects.\u003c\/li\u003e\n\u003cli\u003eTwo aspherical elements help to minimize distortions and spherical aberrations in order to maintain edge-to-edge sharpness and illumination.\u003c\/li\u003e\n\u003cli\u003eSuper Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and colour neutrality when working in strong lighting conditions.\u003c\/li\u003e\n\u003cli\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.\u003c\/li\u003e\n\u003cli\u003eAs a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.\u003c\/li\u003e\n\u003cli\u003eA built-in lens hood helps to block stray light and also protects the bulbous front element.\u003c\/li\u003e\n\u003cli\u003eLens's design accepts rear insert-type gelatin filters, which are cut-to-size and inserted behind the rear lens element.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch2 class=\"h2Lit\"\u003eKey Features of the Canon EF 17-40mm f\/4L USM Lens\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEF-Mount Lens\/Full-Frame Format\u003c\/li\u003e\n\u003cli\u003eAperture Range: f\/4 to f\/22\u003c\/li\u003e\n\u003cli\u003eOne Super Ultra-Low Dispersion Element\u003c\/li\u003e\n\u003cli\u003eThree Aspherical Element\u003c\/li\u003e\n\u003cli\u003eSuper Spectra Coating\u003c\/li\u003e\n\u003cli\u003eRing-Type Ultrasonic Motor AF System\u003c\/li\u003e\n\u003cli\u003eWeather-Sealed Construction\u003c\/li\u003e\n\u003cli\u003eRounded 7-Blade Diaphragm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul class=\"mpn\"\u003e\n\u003cli\u003eMPN - EF17-40L\u003c\/li\u003e\n\u003cli\u003eGTIN - 013803028058\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Canon","offers":[{"title":"Default Title","offer_id":47110849167545,"sku":"100777","price":1249.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/8897\/7337\/files\/257_canon-ef-17-40mm_1.jpg?v=1778105371","url":"https:\/\/www.digidirect.com.au\/products\/canon-ef-17-40mm-f-4l-usm-lens","provider":"digiDirect","version":"1.0","type":"link"}