{"product_id":"sigma-20mm-f1-4-dg-hsm-lens","title":"Sigma 20mm f1.4 DG HSM Art Lens","description":"\u003ch2\u003eSigma 20mm f\/1.4 DG HSM Art Lens – Ultra-Wide Excellence for Full-Frame DSLRs\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSigma 20mm f\/1.4 DG HSM Art Lens\u003c\/strong\u003e is a professional-grade wide-angle prime designed for \u003cstrong\u003efull-frame Canon EF mount DSLRs\u003c\/strong\u003e, delivering outstanding sharpness, low-light performance, and creative versatility. As part of Sigma’s acclaimed \u003cstrong\u003eArt series\u003c\/strong\u003e, this lens is built for photographers who demand top-tier image quality for landscape, architectural, astrophotography, and creative portraiture work.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/Paul-Monaghan-20mm-2.jpg?v=1713191729\"\u003e\u003c\/p\u003e\n\u003ch3\u003eUltra-Wide Field of View with Stunning Optical Performance\u003c\/h3\u003e\n\u003cp\u003eThe 20mm focal length offers a \u003cstrong\u003ebroad perspective with minimal distortion\u003c\/strong\u003e, ideal for expansive scenes, interiors, or dramatic compositions. Its \u003cstrong\u003ebright f\/1.4 maximum aperture\u003c\/strong\u003e delivers \u003cstrong\u003eimpressive low-light capability\u003c\/strong\u003e and \u003cstrong\u003eshallow depth of field\u003c\/strong\u003e, allowing photographers to shoot handheld in challenging lighting or creatively isolate subjects with smooth, pleasing bokeh.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWide-angle 20mm prime for full-frame Canon EF mount\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEquivalent to 32mm on APS-C sensor cameras\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal for landscapes, architecture, interiors, night sky, and creative wide portraits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFast f\/1.4 aperture for low-light shooting and background separation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/a20_imp_main_06.jpg?v=1713191729\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAdvanced Optical Construction\u003c\/h3\u003e\n\u003cp\u003eEngineered with \u003cstrong\u003e15 elements in 11 groups\u003c\/strong\u003e, including \u003cstrong\u003etwo FLD, five SLD, and two aspherical elements\u003c\/strong\u003e, this lens offers \u003cstrong\u003eexceptional correction for chromatic aberration, distortion, and spherical aberration\u003c\/strong\u003e. The result is \u003cstrong\u003etack-sharp images across the frame\u003c\/strong\u003e, even at wide apertures.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTwo FLD (\"F\" Low Dispersion) elements for superior colour correction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFive SLD (Special Low Dispersion) elements for improved clarity and sharpness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo aspherical elements to reduce distortion and improve edge-to-edge consistency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuper Multi-Layer Coating\u003c\/strong\u003e minimises flare and ghosting for contrast-rich results, even in backlit conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/a20_imp_main_07.jpg?v=1713191729\"\u003e\u003c\/p\u003e\n\u003ch3\u003eBuilt for Precision and Durability\u003c\/h3\u003e\n\u003cp\u003eConstructed from \u003cstrong\u003eThermally Stable Composite (TSC)\u003c\/strong\u003e and reinforced with \u003cstrong\u003etraditional metals\u003c\/strong\u003e, the 20mm f\/1.4 is built to withstand varying temperatures and demanding environments. The \u003cstrong\u003ebrass bayonet mount\u003c\/strong\u003e enhances strength and long-term reliability, while the \u003cstrong\u003efixed petal-shaped lens hood\u003c\/strong\u003e reduces flare and protects the front element.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTSC barrel construction for reliable performance in all climates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBrass mount for precise fit and long-term durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFixed hood design enhances contrast and shields front glass\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/a20_imp_main_10.jpg?v=1713191729\"\u003e\u003c\/p\u003e\n\u003ch3\u003eHigh-Speed Autofocus with Full-Time Manual Override\u003c\/h3\u003e\n\u003cp\u003eThe integrated \u003cstrong\u003eHyper Sonic Motor (HSM)\u003c\/strong\u003e ensures fast, quiet, and smooth autofocus—ideal for stills and occasional video work. You can also \u003cstrong\u003emanually fine-tune focus at any time\u003c\/strong\u003e without switching modes, offering complete control when needed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHyper Sonic Motor (HSM) with full-time manual focus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOptimised AF algorithm for smoother performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMinimum focusing distance: 27.6cm (10.9 inches)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCustomisation via Sigma USB Dock\u003c\/h3\u003e\n\u003cp\u003eCompatible with the optional \u003cstrong\u003eSigma USB Dock\u003c\/strong\u003e, this lens can be fine-tuned to your preferences. Adjust focus parameters, update firmware, or refine AF behaviour using Sigma’s Optimization Pro software.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/Paul-Monaghan-20mm-4.jpg?v=1713191729\"\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMount: Canon EF (Full-frame)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFocal Length: 20mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaximum Aperture: f\/1.4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMinimum Aperture: f\/16\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLens Construction: 15 elements in 11 groups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAngle of View: 94.5°\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMinimum Focus Distance: 27.6cm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutofocus: Hyper Sonic Motor (HSM)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDiaphragm Blades: 9 (rounded)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFilter Thread: None (due to bulbous front element)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDimensions: Ø90.7mm × 129.8mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: Approx. 950g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFixed petal-shaped lens hood\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with Sigma USB Dock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSigma 20mm f\/1.4 DG HSM Art Lens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFront and rear lens caps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtective lens case\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated petal-shaped lens hood\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/a20_imp_main_08.jpg?v=1713191729\"\u003e\u003c\/p\u003e\n\u003cp\u003eFor professionals and enthusiasts seeking \u003cstrong\u003ethe finest in ultra-wide-angle performance\u003c\/strong\u003e, the \u003cstrong\u003eSigma 20mm f\/1.4 Art\u003c\/strong\u003e delivers unmatched clarity, speed, and creative control. Whether you're shooting starscapes, architecture, or environmental portraits, this lens ensures you capture the moment with \u003cstrong\u003edepth, detail, and impact\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Sigma","offers":[{"title":"Canon EF","offer_id":40325604180065,"sku":"085126412548","price":699.0,"currency_code":"GBP","in_stock":false},{"title":"Nikon F","offer_id":40325604212833,"sku":"085126412555","price":699.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/products\/81xjfdusezl._sl1500__1.jpg?v=1654864874","url":"https:\/\/carmarcameras.mom\/products\/sigma-20mm-f1-4-dg-hsm-lens","provider":"Carmarthen Camera Centre","version":"1.0","type":"link"}