{"product_id":"sigma-17-40mm-f1-8-dc-art-lens-canon-rf","title":"Sigma 17-40mm F1.8 DC Art Lens (Canon RF)","description":"\u003cp\u003e\u003cstrong\u003eSigma 17-40mm F1.8 DC Art Lens for Canon RF Mount (214972)\u003c\/strong\u003e\u003c\/p\u003e\r\n  \u003cp\u003eThe Sigma 17-40mm F1.8 DC Art is a groundbreaking APS-C zoom lens that redefines what a large-aperture zoom can achieve. Building on the legendary Sigma 18-35mm F1.8 DC HSMArt the world's first F1.8 zoom lens this next-generation successor expands the focal range to 17–40mm, reduces weight by over 30%, and incorporates video-first features including inner zoom, minimal focus breathing, and Sigma's HLA (High-response Linear Actuator) autofocus system. The result is an ultra-versatile wide-to-normal zoom delivering prime-level optical performance at every focal length and every aperture setting.\u003c\/p\u003e\r\n\r\n  \u003cp\u003e\u003cstrong\u003eConstant F1.8 Aperture Across the Entire Zoom Range\u003c\/strong\u003e\u003c\/p\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eF1.8 Throughout:\u003c\/strong\u003e Maintain a wide, constant maximum aperture from 17mm to 40mm — ideal for low-light shooting, subject separation, and beautiful bokeh at any focal length.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003ePrime-Like Rendering:\u003c\/strong\u003e High-precision optical design achieves exceptional sharpness, contrast, and tonal rendering even wide open at F1.8, rivaling the best prime lenses.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eAPS-C Equivalent Range:\u003c\/strong\u003e Provides a 27.2–64mm equivalent focal length on Canon RF-S APS-C bodies (1.6x crop factor) — covering wide-angle to portrait reach in a single lens.\u003c\/li\u003e\r\n  \u003c\/ul\u003e\r\n\r\n  \u003cp\u003e\u003cstrong\u003eExceptional Optical Design\u003c\/strong\u003e\u003c\/p\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003e17 Elements in 11 Groups:\u003c\/strong\u003e Advanced optical construction with 4 SLD (Special Low Dispersion) glass elements and 4 aspherical elements.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eAxial Chromatic Aberration Correction:\u003c\/strong\u003e Emphasis on correcting axial chromatic aberration and sagittal coma flare for outstanding sharpness at F1.8.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eSuper Multi-Layer Coating:\u003c\/strong\u003e Sigma's proprietary coating, developed with advanced simulation technology, minimizes flare and ghosting for rich, high-contrast results in all lighting conditions.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003e11-Blade Rounded Diaphragm:\u003c\/strong\u003e Produces smooth, natural background blur (bokeh) throughout the aperture range.\u003c\/li\u003e\r\n  \u003c\/ul\u003e\r\n\r\n  \u003cp\u003e\u003cstrong\u003eVideo-Optimized Performance\u003c\/strong\u003e\u003c\/p\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eInner Zoom Mechanism:\u003c\/strong\u003e The lens maintains a constant overall length when zooming or focusing — ideal for gimbal use and reducing dust\/splash ingress.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eMinimal Focus Breathing:\u003c\/strong\u003e Changes in angle of view during focus shifts are suppressed, enabling smooth, cinematic focus pulls without jarring reframing.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eHLA (High-response Linear Actuator) AF:\u003c\/strong\u003e Fast, quiet, and precise autofocus driven by a linear actuator motor — perfectly suited for single-operator run-and-gun shooting and vlogging.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eControl Ring (Canon RF):\u003c\/strong\u003e The Canon RF Mount version features a control ring (assignable via camera menu) in place of the aperture ring found on other mount versions.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eTwo AFL Buttons:\u003c\/strong\u003e Positioned on the side and top of the lens barrel for easy access in both landscape and portrait orientations; functions are assignable via camera menu.\u003c\/li\u003e\r\n  \u003c\/ul\u003e\r\n\r\n  \u003ch3\u003e\u003cstrong\u003eBuild Quality \u0026amp; Handling\u003c\/strong\u003e\u003c\/h3\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eDust- \u0026amp; Splash-Resistant Construction:\u003c\/strong\u003e Sealed design protects against dust and moisture for reliable use in challenging outdoor environments.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eWater- \u0026amp; Oil-Repellent Front Element Coating:\u003c\/strong\u003e The frontmost element is treated to repel water and oil, maintaining image clarity in the field.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e At 560g \/ 19.8 oz and 67mm filter thread — one size smaller than the predecessor's 72mm — the 17-40mm Art offers outstanding portability for its aperture class.\u003c\/li\u003e\r\n    \u003cli\u003e\n\u003cstrong\u003eOver 30% Lighter Than Predecessor:\u003c\/strong\u003e Significantly more portable than the 18-35mm F1.8 DC HSM | Art while delivering a wider zoom range and improved feature set. \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/p\u003e\r\n  \u003cul\u003e\r\n    \u003cli\u003eSigma 17-40mm F1.8 DC Art Lens (Canon RF Mount) — 214972\u003c\/li\u003e\r\n    \u003cli\u003eLens Hood LH728-02\u003c\/li\u003e\r\n    \u003cli\u003eFront Cap LCF-67 IV\u003c\/li\u003e\r\n    \u003cli\u003eRear Cap LCR III\u003c\/li\u003e\r\n    \u003cli\u003eProtective Pouch\u003cbr\u003e\n\u003c\/li\u003e\r\n  \u003c\/ul\u003e","brand":"Sigma","offers":[{"title":"Default Title","offer_id":43309864550461,"sku":"SIGMA-17-40-CNN-US","price":884.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1726\/0467\/files\/2377375.jpg?v=1782837762","url":"https:\/\/www.thetedstore.com\/products\/sigma-17-40mm-f1-8-dc-art-lens-canon-rf","provider":"Teds Electronics","version":"1.0","type":"link"}