{"product_id":"heliopan-rollei-bay-iii-light-red-filter-25-schott-glass-for-b-w-photography","title":"Heliopan Rollei Bay III Light Red Filter (25) 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 1075 Bright Red 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 1075 Bright Red Filter is a high-grade creative tool designed to inject raw drama into monochrome imaging, landscape work, and infrared photography. By locking out blue and green wavelengths entirely, it intensifies native red channels to supercharge image contrast, transforming faint passing clouds into heavy, brooding skies. Every piece of glass features an advanced 14-layer SH-PMC multicoating setup that cuts flare to virtually zero, while giving outdoor shooters a robust, water-shedding shield that resists field smudges and wipes clean in seconds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAggressive Tone Filtering: Stifles green and blue wavelengths completely to isolate reds, building stark, cinematic skies and cutting atmospheric haze.\u003c\/li\u003e\n\u003cli\u003eSH-PMC Multi-Resistant Coating: Layers seven distinct anti-reflective barriers on each side to maximize contrast while repelling mist, grime, and fingerprint oil.\u003c\/li\u003e\n\u003cli\u003ePremium Schott Glass: Utilizes highly polished, flat-ground Schott elements to ensure uniform light absorption and razor-sharp image fidelity.\u003c\/li\u003e\n\u003cli\u003eLow-Profile Mounting: The ultra-compact 4mm rim prevents dark corners when paired with wide lenses down to 24mm full-frame or 18mm cropped systems.\u003c\/li\u003e\n\u003cli\u003eHardened Brass Assembly: Built from rugged, dimensionally stable brass that eliminates cold-weather binding and glides smoothly onto lens threads.\u003c\/li\u003e\n\u003cli\u003ePass-Through Front Threading: Features matching front-end threads so you can seamlessly stack secondary accessories or click a standard lens hood into place.\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: Monochrome Contrast Filter (1075 Bright Red \/ International No. 25)\u003c\/li\u003e\n\u003cli\u003eApplication: Fine-Art Black-and-White, Aerial, and Infrared Photography\u003c\/li\u003e\n\u003cli\u003eCategory: Black-white filters\u003c\/li\u003e\n\u003cli\u003eManufacturer: HELIOPAN\u003c\/li\u003e\n\u003cli\u003eFilter Factor: Roughly 8x (translates to a +3 stop increase, or +1 stop exposure adjustment when relying on in-camera TTL meters)\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: 14-Layer Total SH-PMC Multicoating\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Germany\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Heliopan","offers":[{"title":"Default Title","offer_id":51412190265639,"sku":"10253030","price":119.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0877\/0597\/7127\/files\/red25.jpg?v=1779222177","url":"https:\/\/cambridgeworld.com\/products\/heliopan-rollei-bay-iii-light-red-filter-25-schott-glass-for-b-w-photography","provider":"Cambridge World Inc","version":"1.0","type":"link"}