{"product_id":"sigma-77mm-wr-ceramic-protector-filter","title":"Sigma 77mm WR Ceramic Protector Filter","description":"\u003cul\u003e \u003cli\u003eClear Protection Filter\u003c\/li\u003e \u003cli\u003ePrevents Damage to Lens\u003c\/li\u003e \u003cli\u003e1x Filter Factor, +0 Stop\u003c\/li\u003e \u003cli\u003e99.76% Transmittance\u003c\/li\u003e \u003cli\u003eNo Effect on Image\u003c\/li\u003e \u003cli\u003eClear Glass Ceramic Construction\u003c\/li\u003e \u003cli\u003eScratch- and Shock-Resistant\u003c\/li\u003e \u003cli\u003eWater-Repellent Coating\u003c\/li\u003e \u003cli\u003e77mm Front Threads\u003c\/li\u003e \u003cli\u003eDurable Acrylic Filter Case\u003c\/li\u003e \u003c\/ul\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cp\u003e Characterized by its uniquely durable construction, the \u003cb\u003e77mm WR Ceramic Protector Filter\u003c\/b\u003e from \u003cb\u003eSigma\u003c\/b\u003e is a clear filter designed to guard the front of a lens from impacts, scratching, and other elements. Developed using a clear glass ceramic substrate, this filter blends a high 99.76% transmittance value with greater hardness than chemically-strengthened glass and greater flexibility than sapphire crystal glass. This results in a build that is shock- and scratch-resistant to withstand a variety of impacts while shooting. Additionally, a water-repellent coating has also been applied to resist water droplets and fingerprint smudging, as well as static electricity from attracting dust or other particles. Built for use in trying conditions, the unique design of the WR Ceramic Protector Filter helps to maintain the lens' inherent image quality while affording a high degree of protection. \u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv\u003e \u003cdl\u003e \u003cdd\u003eClear protection filter guards the front lens element from a variety of impacts and scratching without affecting image quality.\u003c\/dd\u003e \u003c\/dl\u003e \u003cdl\u003e \u003cdd\u003eClear glass ceramic is a highly durable substrate that has a greater hardness than chemically-strengthened glass and more flexibility than sapphire crystal glass.\u003c\/dd\u003e \u003c\/dl\u003e \u003cdl\u003e \u003cdd\u003eUnique construction has a Vickers hardness number of 700HV, making it both scratch- and shock-resistant. This hardness also lessens the likelihood of scratching or chipping that can lead to the filter shattering.\u003c\/dd\u003e \u003c\/dl\u003e \u003cdl\u003e \u003cdd\u003eRather than only the surface structure being hardened, clear glass ceramic involves a heat treatment process that precipitates microcrystals of a mineral called spinel in order to achieve consistent, even strength across the entire filter surface. This strength also enables the design of the filter to be notably thin and lightweight.\u003c\/dd\u003e \u003c\/dl\u003e \u003cdl\u003e \u003cdd\u003eA water-repellent (WR) coating has been applied that, in addition to preventing water and oil from adhering to the filter surface, also helps to minimize ghosting and flare. This coating reflects 0.24% of light, giving an overall transmittance value of 99.76%.\u003c\/dd\u003e \u003c\/dl\u003e \u003cdl\u003e \u003cdd\u003eThe WR coating also serves as an anti-static coating, which helps to repel dust or other particles from clinging to the filter surface.\u003c\/dd\u003e \u003c\/dl\u003e \u003cdl\u003e \u003cdd\u003eThe included hard acrylic case protects the filter when not in use and has been designed to prevent accidental, unwanted opening.\u003c\/dd\u003e \u003c\/dl\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv\u003e \u003cspan\u003eUPC: 085126931827\u003c\/span\u003e \u003c\/div\u003e \u003c\/div\u003e\u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eFilter Type\u003c\/td\u003e \u003ctd\u003eClear\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFilter Factor\u003c\/td\u003e \u003ctd\u003e1 (0 Stop)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eShape\u003c\/td\u003e \u003ctd\u003eCircle\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCircular Size\u003c\/td\u003e \u003ctd\u003e77 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFront Accessory Thread \/ Bayonet\u003c\/td\u003e \u003ctd\u003e77 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFilter Material\u003c\/td\u003e \u003ctd\u003eGlass\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eCoatings\u003c\/td\u003e \u003ctd\u003eMulti-Coating\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003e \u003ca\u003ePackaging Info\u003c\/a\u003e \u003c\/th\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003ePackage Weight\u003c\/td\u003e \u003ctd\u003e0.25 lb\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBox Dimensions (LxWxH)\u003c\/td\u003e \u003ctd\u003e4.9 x 4.1 x 0.8\"\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv\u003e \u003cdiv\u003eIn the Box\u003c\/div\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cdiv\u003eSigma 77mm WR Ceramic Protector Filter\u003c\/div\u003e \u003c\/div\u003e \u003cul\u003e \u003cli\u003eAcrylic Filter Case\u003c\/li\u003e \u003cli\u003eLimited 1-Year North and South America Warranty\u003c\/li\u003e \u003cli\u003eLimited 3-Year U.S.A. Warranty Extension\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003c\/div\u003e All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.","brand":"Sigma-10","offers":[{"title":"Default Title","offer_id":27464487248,"sku":"SICGC77:SICGC77:bhpv","price":21565.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/1611\/products\/sigma_afg9e0_77mm_clear_glass_ceramic_1450889232000_1208869.jpg?v=1575979726","url":"https:\/\/www.tanotis.com\/products\/sigma-77mm-wr-ceramic-protector-filter","provider":"Tanotis","version":"1.0","type":"link"}