{"product_id":"heliopan-filters-702804","title":"Heliopan 28mm Dark Yellow Filter (15) (702804)","description":"\u003cdiv class=\"wide\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"productView\"\u003e\n\u003csection class=\"productView-details\" id=\"product-bullets\"\u003e\n\u003cdiv class=\"text-area--custom product-bullets\"\u003e\n\u003cul\u003e\n\u003cli\u003eSingle coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.\u003c\/li\u003e\n\u003cli\u003eConstructed from Schott glass for optical clarity.\u003c\/li\u003e\n\u003cli\u003eBrass filter ring helps to prevent jamming and provides additional strength.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"container overflow\" id=\"product-details\"\u003e\n\u003cdiv class=\"product-block\" id=\"product-overview\"\u003e\n\u003cdiv class=\"mobile-uncollapse\" itemprop=\"description\"\u003eThe Heliopan 28mm Dark Yellow Filter is a basic contrast filter, primarily for use with black and white film, that very strongly darkens skies and blues, cuts through haze, increases contrast, and is often used for outdoor photography to emphasize contrast and shadows. Commonly used for landscape photography to emphasize blue skies and give clouds more visual depth. Also used for micro and infrared aerial photography applications where added contrast can be used to enhance detail. There is an approximate 4x filter factor with this filter, requiring an increase of 2 stops for normal exposure. \u003c\/div\u003e\n\u003cdiv class=\"mobile-uncollapse\" itemprop=\"description\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-block\" id=\"product-specs\"\u003e\n\u003ch2 class=\"product-headline\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"mobile-collapse\"\u003e\n\u003cdl class=\"\"\u003e\n\u003cdt\u003eFilter Factore:\u003c\/dt\u003e\n\u003cdd\u003eApprox. 4x\u003c\/dd\u003e\n\u003cdt\u003eFilter Size:\u003c\/dt\u003e\n\u003cdd\u003e28mm\u003c\/dd\u003e\n\u003cdt\u003eFrame Material:\u003c\/dt\u003e\n\u003cdd\u003eBrass\u003c\/dd\u003e\n\u003cdt\u003ePhysical:\u003c\/dt\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003eOptics:\u003c\/dt\u003e\n\u003cdd\u003eSchott\u003c\/dd\u003e\n\u003cdt\u003eWarranty:\u003c\/dt\u003e\n\u003cdd\u003eLimited Lifetime\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Heliopan","offers":[{"title":"Default Title","offer_id":52759048454462,"sku":"702804","price":58.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/3560\/8638\/files\/yellow_15.webp?v=1767132101","url":"https:\/\/heliopanusa.com\/products\/heliopan-filters-702804","provider":"Heliopan","version":"1.0","type":"link"}