{"product_id":"heliopan-35-5mm-dark-yellow-filter-15-schott-glass-for-b-w-photography","title":"Heliopan 35.5mm Dark Yellow Filter (15) Schott Glass for B+W Photography","description":"\u003cp\u003e\u003cstrong\u003eItem Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeliopan B\/W 1015 Yellow Dark Filter\u003c\/li\u003e\n\u003cli\u003eManufacturer Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Heliopan B\/W 1015 Yellow Dark Filter is a premium optical contrast filter specifically engineered for monochrome film photography. By heavily dampening blue wavelengths, this filter provides strong cloud separation and a heightened depth effect, making it indispensable for landscape photography under high midday sun and harsh shadows. Each filter features a 4-fold anti-reflective coating that boosts contrast, minimizes light loss, and forms a water- and dirt-repellent barrier that keeps the optics pristine during outdoor assignments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy Blue Suppression: Drastically darkens blue tones to produce striking cloud definition and enhanced atmospheric depth.\u003c\/li\u003e\n\u003cli\u003eAdvanced 4-Fold Coating: Precision multi-coating minimizes reflections at air-to-glass surfaces while repelling water, dust, and fingerprints.\u003c\/li\u003e\n\u003cli\u003eSchott Glass Substrate: Crafted using fully ground and smoothly polished Schott glass for exceptional sharpness and neutral tonal rendition.\u003c\/li\u003e\n\u003cli\u003eSlim Vignetting-Free Frame: A compact 4mm profile prevents edge shading on full-frame lenses down to 24mm and APS-C setups down to 18mm.\u003c\/li\u003e\n\u003cli\u003eDurable Brass Cell: Precision-machined brass ring resists temperature-induced warping and prevents binding or cross-threading in the lens mount.\u003c\/li\u003e\n\u003cli\u003eDouble-Threaded Utility: Features an identical front thread matching the screw-in diameter to accept secondary filters or matching lens hoods.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter Type: Contrast Filter (1015 Dark Yellow \/ International No. 15)\u003c\/li\u003e\n\u003cli\u003eApplication: Black-and-White Film and Digital Photography\u003c\/li\u003e\n\u003cli\u003eCategory: Black-white filters\u003c\/li\u003e\n\u003cli\u003eManufacturer: HELIOPAN\u003c\/li\u003e\n\u003cli\u003eFilter Factor: Approximately 4x (requires a manual exposure compensation adjustments)\u003c\/li\u003e\n\u003cli\u003eSubstrate Material: Premium Schott Optical Glass\u003c\/li\u003e\n\u003cli\u003eRing Material: Matte Black Coated Brass\u003c\/li\u003e\n\u003cli\u003eFrame Profile: SLIM (4 mm height)\u003c\/li\u003e\n\u003cli\u003eCoating Type: 4-Fold Anti-Reflective and Protective Coating\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Germany\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Heliopan","offers":[{"title":"Default Title","offer_id":51411797639463,"sku":"10151535","price":68.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0877\/0597\/7127\/files\/yellow15.jpg?v=1779220371","url":"https:\/\/cambridgeworld.com\/products\/heliopan-35-5mm-dark-yellow-filter-15-schott-glass-for-b-w-photography","provider":"Cambridge World Inc","version":"1.0","type":"link"}