{"product_id":"sigma-af-17-40mm-f-1-8-dc-a-fujifilm-x-mount-lens","title":"Sigma AF 17-40MM F\/1.8 DC (A) Fujifilm X Mount Lens","description":"\u003ch1 data-start=\"114\" data-end=\"174\"\u003e\u003cstrong data-start=\"116\" data-end=\"172\"\u003eSigma AF 17‑40mm F1.8 DC Art Lens – Fujifilm X‑Mount\u003c\/strong\u003e\u003c\/h1\u003e \u003ch3 data-start=\"175\" data-end=\"235\"\u003e\u003cstrong data-start=\"179\" data-end=\"235\"\u003eBright Zoom Performance for APS‑C Mirrorless Cameras\u003c\/strong\u003e\u003c\/h3\u003e \u003cp data-start=\"237\" data-end=\"795\"\u003eThe \u003cstrong data-start=\"241\" data-end=\"273\"\u003eSigma AF 17‑40mm F1.8 DC Art\u003c\/strong\u003e is a premium wide‑to‑standard zoom lens engineered for Fujifilm X‑mount APS‑C mirrorless cameras, designed to deliver \u003cstrong data-start=\"392\" data-end=\"483\"\u003eexceptional optical quality, outstanding low‑light capability, and creative flexibility\u003c\/strong\u003e. Part of Sigma’s acclaimed Art line, this lens combines a \u003cstrong data-start=\"542\" data-end=\"595\"\u003econstant f\/1.8 aperture throughout the zoom range\u003c\/strong\u003e with high‑resolution optics — giving you the freedom to shoot in challenging light, shallow depth‑of‑field effects, and stunning image clarity from edge‑to‑edge. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003chr data-start=\"797\" data-end=\"800\"\u003e \u003ch2 data-start=\"802\" data-end=\"821\"\u003e\u003cstrong data-start=\"805\" data-end=\"821\"\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e \u003ch3 data-start=\"823\" data-end=\"859\"\u003e\u003cstrong data-start=\"827\" data-end=\"859\"\u003eFast Constant f\/1.8 Aperture\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"860\" data-end=\"1112\"\u003e \u003cli data-start=\"860\" data-end=\"993\"\u003e \u003cp data-start=\"862\" data-end=\"993\"\u003eBright f\/1.8 aperture across the entire zoom range provides \u003cstrong data-start=\"922\" data-end=\"957\"\u003eexcellent low‑light performance\u003c\/strong\u003e and smooth background separation.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"994\" data-end=\"1112\"\u003e \u003cp data-start=\"996\" data-end=\"1112\"\u003eIdeal for indoor, street, event, and low‑light shooting without needing flash. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"1114\" data-end=\"1144\"\u003e\u003cstrong data-start=\"1118\" data-end=\"1144\"\u003eVersatile 17–40mm Zoom\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"1145\" data-end=\"1413\"\u003e \u003cli data-start=\"1145\" data-end=\"1323\"\u003e \u003cp data-start=\"1147\" data-end=\"1323\"\u003eCovers wide‑angle to standard focal lengths (approx. 25.5–60mm full‑frame equivalent) — perfect for \u003cstrong data-start=\"1247\" data-end=\"1320\"\u003elandscapes, travel, environmental portraits, and everyday photography\u003c\/strong\u003e.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1324\" data-end=\"1413\"\u003e \u003cp data-start=\"1326\" data-end=\"1413\"\u003eExpands creative framing without changing lenses. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"1415\" data-end=\"1446\"\u003e\u003cstrong data-start=\"1419\" data-end=\"1446\"\u003eAdvanced Optical Design\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"1447\" data-end=\"1696\"\u003e \u003cli data-start=\"1447\" data-end=\"1586\"\u003e \u003cp data-start=\"1449\" data-end=\"1586\"\u003e17 elements in 11 groups — including \u003cstrong data-start=\"1486\" data-end=\"1517\"\u003eSLD and aspherical elements\u003c\/strong\u003e — deliver sharp resolution, minimal distortion, and high contrast.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1587\" data-end=\"1696\"\u003e \u003cp data-start=\"1589\" data-end=\"1696\"\u003eRounded 11‑blade diaphragm produces pleasing out‑of‑focus highlights. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"1698\" data-end=\"1726\"\u003e\u003cstrong data-start=\"1702\" data-end=\"1726\"\u003eHigh‑Speed Autofocus\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"1727\" data-end=\"1970\"\u003e \u003cli data-start=\"1727\" data-end=\"1850\"\u003e \u003cp data-start=\"1729\" data-end=\"1850\"\u003eHLA (High‑response Linear Actuator) motor provides \u003cstrong data-start=\"1780\" data-end=\"1818\"\u003efast, quiet, and precise autofocus\u003c\/strong\u003e — great for stills and video.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1851\" data-end=\"1970\"\u003e \u003cp data-start=\"1853\" data-end=\"1970\"\u003eMinimal focus breathing helps ensure smoother focus transitions when recording. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"1972\" data-end=\"2009\"\u003e\u003cstrong data-start=\"1976\" data-end=\"2009\"\u003eThoughtful Handling \u0026amp; Control\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"2010\" data-end=\"2257\"\u003e \u003cli data-start=\"2010\" data-end=\"2087\"\u003e \u003cp data-start=\"2012\" data-end=\"2087\"\u003eCustomisable AFL buttons offer quick access to assigned camera functions.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2088\" data-end=\"2257\"\u003e \u003cp data-start=\"2090\" data-end=\"2257\"\u003eDust‑ and splash‑resistant design with water\/oil‑repellent front element helps keep the lens working in challenging environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"2259\" data-end=\"2294\"\u003e\u003cstrong data-start=\"2263\" data-end=\"2294\"\u003eCompact, Travel‑Ready Build\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"2295\" data-end=\"2481\"\u003e \u003cli data-start=\"2295\" data-end=\"2481\"\u003e \u003cp data-start=\"2297\" data-end=\"2481\"\u003eWeighing ~530 g with a 67 mm filter thread, the lens balances portability with professional‑grade performance — ideal for travel and everyday use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"2483\" data-end=\"2486\"\u003e \u003ch2 data-start=\"2488\" data-end=\"2509\"\u003e\u003cstrong data-start=\"2491\" data-end=\"2509\"\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e \u003cul data-start=\"2510\" data-end=\"2986\"\u003e \u003cli data-start=\"2510\" data-end=\"2548\"\u003e \u003cp data-start=\"2512\" data-end=\"2548\"\u003e\u003cstrong data-start=\"2512\" data-end=\"2529\"\u003eFocal Length:\u003c\/strong\u003e 17–40 mm (APS‑C)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2549\" data-end=\"2580\"\u003e \u003cp data-start=\"2551\" data-end=\"2580\"\u003e\u003cstrong data-start=\"2551\" data-end=\"2572\"\u003eMaximum Aperture:\u003c\/strong\u003e f\/1.8\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2581\" data-end=\"2611\"\u003e \u003cp data-start=\"2583\" data-end=\"2611\"\u003e\u003cstrong data-start=\"2583\" data-end=\"2604\"\u003eMinimum Aperture:\u003c\/strong\u003e f\/16\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2612\" data-end=\"2663\"\u003e \u003cp data-start=\"2614\" data-end=\"2663\"\u003e\u003cstrong data-start=\"2614\" data-end=\"2636\"\u003eLens Construction:\u003c\/strong\u003e 17 elements in 11 groups\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2664\" data-end=\"2702\"\u003e \u003cp data-start=\"2666\" data-end=\"2702\"\u003e\u003cstrong data-start=\"2666\" data-end=\"2687\"\u003eDiaphragm Blades:\u003c\/strong\u003e 11 (rounded)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2703\" data-end=\"2751\"\u003e \u003cp data-start=\"2705\" data-end=\"2751\"\u003e\u003cstrong data-start=\"2705\" data-end=\"2732\"\u003eMinimum Focus Distance:\u003c\/strong\u003e 28 cm \/ 11.1 in.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2752\" data-end=\"2791\"\u003e \u003cp data-start=\"2754\" data-end=\"2791\"\u003e\u003cstrong data-start=\"2754\" data-end=\"2772\"\u003eMagnification:\u003c\/strong\u003e 1:4.8 (at 40 mm)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2792\" data-end=\"2822\"\u003e \u003cp data-start=\"2794\" data-end=\"2822\"\u003e\u003cstrong data-start=\"2794\" data-end=\"2814\"\u003eFilter Diameter:\u003c\/strong\u003e 67 mm\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2823\" data-end=\"2852\"\u003e \u003cp data-start=\"2825\" data-end=\"2852\"\u003e\u003cstrong data-start=\"2825\" data-end=\"2836\"\u003eWeight:\u003c\/strong\u003e 530 g approx.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2853\" data-end=\"2878\"\u003e \u003cp data-start=\"2855\" data-end=\"2878\"\u003e\u003cstrong data-start=\"2855\" data-end=\"2865\"\u003eMount:\u003c\/strong\u003e Fujifilm X\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"2879\" data-end=\"2986\"\u003e \u003cp data-start=\"2881\" data-end=\"2986\"\u003e\u003cstrong data-start=\"2881\" data-end=\"2894\"\u003eUse Case:\u003c\/strong\u003e Landscapes, travel, portraits, low‑light photography.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"Sigma UK LTD","offers":[{"title":"Default Title","offer_id":57126868484470,"sku":"111259","price":779.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1165\/5118\/files\/cafcc9ba-bf3c-4ed4-b70e-cd6cace0d230.jpg?v=1769094985","url":"https:\/\/www.cambrianphoto.co.uk\/products\/sigma-af-17-40mm-f-1-8-dc-a-fujifilm-x-mount-lens","provider":"Cambrian Photography","version":"1.0","type":"link"}