{"product_id":"ulr-28dsmc-uv-lens-protector-filter-99-6-transmittance-schott-b270","title":"ULR 28DSMC UV Lens Protector Filter — 99.6% Transmittance, 28-Layer Coating, Schott B270 Glass","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eULR 28DSMC UV Lens Protector Filter — 99.6% Transmittance With Zero Optical Compromise\u003c\/h2\u003e\n\u003cp\u003eMost UV protection filters solve one problem and create another: they shield your front element from dust, scratches, and moisture, but introduce ghosting, color shifts, or a measurable drop in sharpness. This ULR 28DSMC UV lens protector filter was built for photographers and videographers who refuse to trade image quality for physical protection — delivering 99.6% (±0.1%) light transmittance and a reflectance of ≤0.1%, so the filter is effectively invisible to your sensor.\u003c\/p\u003e\n\u003cp\u003eEach filter consists of a single piece of Schott B270 optical-grade crown glass from Germany, coated on both sides with 28 layers of multi-coating (56 layers total). The coatings provide anti-reflection performance, dual-sided water repellency, oil resistance, and light moisture protection. The frame is machined from 6061 aerospace aluminum alloy and measures just 3.3mm (≈0.13\") thick — slim enough to minimize vignetting risk on most lenses. Glass hardness is rated at 6H on the Mohs scale. The filter is available in multiple thread sizes to fit a wide range of lenses; check the variant selector above for available diameters.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include landscape and travel photography, where a UV protector for DSLR and mirrorless lenses needs to stay on the lens full-time without affecting color or contrast, studio and portrait work, where ghosting from internal reflections would be visible in specular highlights, and video production, where a low-reflectance UV filter for cinema lenses is needed to protect the front element during run-and-gun shooting without introducing flare artifacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits any lens with a standard threaded filter ring. Match the filter diameter to the ø number printed on your lens barrel or lens cap. Available in multiple sizes — select your thread diameter above.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eSize tip:\u003c\/strong\u003e Your filter thread size is marked on the lens barrel with a ø symbol (e.g., ø72 = 72mm filter). Check this before selecting your size above.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These ULR UV Lens Protector Filters\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔭\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e99.6% Light Transmittance\u003c\/strong\u003e — At 99.6% (±0.1%) transmittance and ≤0.1% reflectance, this UV protector filter for camera lenses passes virtually all light to the sensor with no measurable exposure shift or color cast.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003e📷Schott B270 Optical Glass\u003c\/strong\u003e — The German-made B270 crown glass substrate delivers color-neutral, low-distortion optical performance — a step up from standard float glass used in entry-level UV filters.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌊\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e28-Layer Dual-Side Multi-Coating\u003c\/strong\u003e — 56 coating layers total (28 per side) provide anti-reflection, dual-side water repellency, oil resistance, and light moisture protection — keeping the glass clean and flare-free in demanding shooting conditions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e6H Mohs Glass Hardness\u003c\/strong\u003e — Rated at 6H on the Mohs hardness scale, the glass resists everyday scratches from dust, sand, and accidental contact better than softer optical glass alternatives.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✈️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e6061 Aerospace Aluminum Frame\u003c\/strong\u003e — The 3.3mm (≈0.13\") slim frame is machined from 6061 aluminum alloy for rigidity without excess weight, and is designed to thread on and off smoothly without jamming — important for a low-reflectance UV filter you'll swap frequently.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📸\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eOptically Neutral for Stills and Video\u003c\/strong\u003e — With no color shift and near-zero internal reflection, this filter is suitable for use on cinema lenses and mirrorless systems where even minor optical interference would be visible in graded footage.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — ULR 28DSMC UV Protector Filter\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eULR 28DSMC Protector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilter Type\u003c\/th\u003e\n\u003ctd\u003eUV Protector (clear protection filter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGlass Material\u003c\/th\u003e\n\u003ctd\u003eSchott B270 optical crown glass (Germany)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGlass Hardness\u003c\/th\u003e\n\u003ctd\u003e6H (Mohs scale)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLight Transmittance\u003c\/th\u003e\n\u003ctd\u003e99.6% ±0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReflectance\u003c\/th\u003e\n\u003ctd\u003e≤0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoating\u003c\/th\u003e\n\u003ctd\u003e28-layer multi-coating, dual-side (56 layers total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoating Properties\u003c\/th\u003e\n\u003ctd\u003eAnti-reflection, dual-side water repellent, oil resistant, light moisture resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame Material\u003c\/th\u003e\n\u003ctd\u003e6061 aerospace aluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame Thickness\u003c\/th\u003e\n\u003ctd\u003e3.3mm (≈0.13\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eStandard photographic filter thread (matches lens ø diameter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I find the right filter size for my lens?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYour lens filter thread diameter is printed on the lens barrel or the inside of the lens cap, marked with a ø symbol (e.g., ø72 means you need a 72mm filter). Match that number to the size option above. Common sizes range from 37mm (≈1.5\") to 82mm (≈3.2\") and beyond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does 99.6% light transmittance actually mean for my photos?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA transmittance of 99.6% (±0.1%) means the filter passes nearly all visible light to your sensor, with a reflectance of ≤0.1%. In practice, this generally means no visible exposure shift, no color cast, and no ghosting or flare from internal reflections — the filter behaves as if it isn't there optically.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is Schott B270 glass, and why does it matter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSchott B270 is an optical-grade crown glass manufactured in Germany, known for its high clarity, low iron content, and consistent refractive index. It is commonly used in optical instruments where color neutrality and minimal distortion are required. Using B270 glass as the substrate generally results in a more color-neutral filter compared to standard float glass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the 28-layer dual-sided coating do?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe 28 layers of multi-coating are applied to both sides of the glass (28 layers per side, 56 total). These coatings serve multiple functions: anti-reflection (reducing reflectance to ≤0.1%), water and oil repellency on both surfaces, and light moisture resistance. The result is a filter that is easier to clean and more resistant to fingerprints, water spots, and light condensation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this filter cause vignetting on wide-angle lenses?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe frame thickness is 3.3mm (≈0.13\"), which is relatively slim for a UV protector. In most cases, vignetting is not visible at standard focal lengths. On ultra-wide lenses (typically below 16mm full-frame equivalent), some vignetting may appear at the widest apertures — this is generally true of any filter at those focal lengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the filter frame durable enough for everyday use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe frame is machined from 6061 aerospace-grade aluminum alloy, which provides a good balance of rigidity and light weight. The glass hardness is rated at 6H on the Mohs scale, making it more scratch-resistant than standard optical glass. The frame is designed to resist cross-threading and jamming during installation and removal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I stack this filter with other filters, like a CPL or ND?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, the standard threaded ring allows stacking with other screw-in filters. However, stacking filters generally increases the risk of vignetting on wide-angle lenses and may introduce additional reflections. For most shooting scenarios, using this UV protector alone or swapping it for a CPL or ND when needed is the recommended approach.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your filter size above, then add to cart — protect your lens without compromising a single stop of light.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"37mm","offer_id":52316362604818,"sku":"HKTBXJA390001","price":81.0,"currency_code":"USD","in_stock":true},{"title":"40.5mm","offer_id":52316362637586,"sku":"HKTBXJA390002","price":81.0,"currency_code":"USD","in_stock":true},{"title":"43mm","offer_id":52316362670354,"sku":"HKTBXJA390003","price":86.17,"currency_code":"USD","in_stock":true},{"title":"46mm","offer_id":52316362703122,"sku":"HKTBXJA390004","price":86.17,"currency_code":"USD","in_stock":true},{"title":"49mm","offer_id":52316362735890,"sku":"HKTBXJA390005","price":96.36,"currency_code":"USD","in_stock":true},{"title":"52mm","offer_id":52316362768658,"sku":"HKTBXJA390006","price":101.48,"currency_code":"USD","in_stock":true},{"title":"55mm","offer_id":52316362801426,"sku":"HKTBXJA390007","price":116.88,"currency_code":"USD","in_stock":true},{"title":"58mm","offer_id":52316362834194,"sku":"HKTBXJA390008","price":122.98,"currency_code":"USD","in_stock":true},{"title":"62mm","offer_id":52316362866962,"sku":"HKTBXJA390009","price":126.07,"currency_code":"USD","in_stock":true},{"title":"67mm","offer_id":52316362899730,"sku":"HKTBXJA390010","price":132.18,"currency_code":"USD","in_stock":true},{"title":"72mm","offer_id":52316362932498,"sku":"HKTBXJA390011","price":132.18,"currency_code":"USD","in_stock":true},{"title":"77mm","offer_id":52316362965266,"sku":"HKTBXJA390012","price":143.46,"currency_code":"USD","in_stock":true},{"title":"82mm","offer_id":52316362998034,"sku":"HKTBXJA390013","price":167.0,"currency_code":"USD","in_stock":true},{"title":"39mm","offer_id":52316363030802,"sku":"HKTBXJA390014","price":81.0,"currency_code":"USD","in_stock":true},{"title":"95mm","offer_id":52316363063570,"sku":"HKTBXJA390015","price":301.17,"currency_code":"USD","in_stock":true},{"title":"86mm","offer_id":52316363096338,"sku":"HKTBXJA390016","price":224.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/O1CN015aBmqN1hdSBwJjBN8__2219432004300.jpg?v=1780500668","url":"https:\/\/homediyer.com\/products\/ulr-28dsmc-uv-lens-protector-filter-99-6-transmittance-schott-b270","provider":"HomeDIYer","version":"1.0","type":"link"}