{"product_id":"sigma-50-120mm-f-2-8-dc-os-contemporary-lens-canon-rf","title":"Sigma 50-120mm f\/2.8 DC OS Contemporary Lens (Canon RF)","description":"\u003cp\u003e\u003cstrong\u003eSigma 50-120mm f\/2.8 DC OS Contemporary Lens (Canon RF)\u003c\/strong\u003e is a mirrorless lens designed for APS-C format coverage, offering a 50 to 120mm focal length range that translates to a 35mm equivalent of 75 to 180mm. With a constant maximum aperture of f\/2.8 and a minimum aperture of f\/22, it combines a flexible telephoto zoom range with a bright maximum opening across the entire focal length span.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConstant f\/2.8 Maximum Aperture\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe lens maintains an f\/2.8 maximum aperture throughout the 50 to 120mm zoom range, meaning the widest available opening does not change as the focal length is adjusted. The aperture can be stopped down to a minimum of f\/22. An 11-blade rounded iris is used, which shapes the opening formed by the aperture blades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAPS-C Format Coverage and Angle of View\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe lens is built for APS-C format coverage. Its angle of view spans 31.7° to 13.5°, narrowing as the focal length increases from the wide end to the telephoto end of the zoom range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptical Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe optical design consists of 18 elements arranged in 13 groups. This element-and-group configuration forms the optical path through which the 50 to 120mm focal range and f\/2.8 to f\/22 aperture range are achieved.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMinimum Focus Distance Across the Zoom Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMinimum focus distance varies with focal length. At the wide end, the closest focus distance is 9.1\" \/ 23.1 cm, while at the telephoto end it extends to 21.7\" \/ 55.1 cm.\u0026lt;\/\u003c\/p\u003e","brand":"Sigma","offers":[{"title":"Default Title","offer_id":67666583880049,"sku":"COS50120DCRFS","price":1099.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0062\/3414\/4871\/files\/sigma_694975_50_120mm_f_2_8_dc_os_2005237.jpg?v=1791477727","url":"https:\/\/excellentphoto.ca\/products\/sigma-50-120mm-f-2-8-dc-os-contemporary-lens-canon-rf","provider":"ExcellentPhoto","version":"1.0","type":"link"}