{"product_id":"sigma-cpl-21-water-resistant-circular-polarizer-filter-52mm","title":"Sigma CPL-21 Water-Resistant Circular Polarizer Filter (52mm)","description":"\u003cp\u003eThe \u003cspan\u003e\u003cstrong\u003eSigma CPL-21 Water-Resistant Circular Polarizer Filter (52mm)\u003c\/strong\u003e combines creative image control with everyday lens protection in a redesigned filter that complements the appearance and optical quality of Sigma lenses. Ideal for landscape, travel, architecture, and outdoor photography, the CPL-21 helps photographers achieve cleaner, more vibrant imagery directly in-camera.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe circular polarizing design helps \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ereduce reflections and glare from non-metallic surfaces such as water and glass\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, making it easier to photograph through reflective surfaces or capture greater detail in outdoor scenes. By reducing unwanted reflected light and atmospheric haze, the filter can also \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eincrease contrast and color saturation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, helping skies, foliage, and other natural elements appear richer and more defined.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eConstructed from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eclear optical glass\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the CPL-21 maintains high optical quality while also helping protect the lens's front element from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003edust, dirt, and scratches\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. A \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ewater-resistant optical coating\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e repels liquids from the filter surface, providing additional protection when shooting outdoors or around moisture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAn improved surface treatment on the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003emetal filter frame\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e helps reduce internal reflections for cleaner image reproduction. Sigma's updated \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow-profile frame design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e also helps prevent unwanted vignetting, including when the filter is used with compatible ultrawide-angle lenses.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCombining \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e52mm compatibility, circular polarization, glare and reflection reduction, enhanced contrast and saturation, water resistance, and a low-profile frame\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the Sigma CPL-21 Water-Resistant Circular Polarizer Filter provides both creative control and practical protection for photography in a wide range of environments.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sigma","offers":[{"title":"Default Title","offer_id":47143540129894,"sku":"AFA9C1","price":106.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0554\/4801\/0854\/files\/sigma_afa9c1_cpl_21_water_resistant_circular_polarizer_1788828591_1999825.jpg?v=1789755409","url":"https:\/\/hotrodcameras.com\/products\/sigma-cpl-21-water-resistant-circular-polarizer-filter-52mm","provider":"Hot Rod Cameras","version":"1.0","type":"link"}