It's a high-quality, durable 77mm Multi-Layer Nano Coating UV Filter from the renowned Hasselblad brand, designed to effectively block the majority of UV light, thereby minimizing its impact on your photography. This professional-grade filter meets and exceeds Hasselblad's rigorous optical standards and high-quality requirements, making it an ideal companion for Hasselblad lenses and a valuable addition to any creative toolkit. Crafted from premium SCHOTT B 270 glass, this reliable filter features a double-sided 30-layer low-reflective optical coating, ensuring an impressive average light transmission of over 98.5%. This feature effectively reduces lens flare and guarantees crystal clear images, even when shooting in challenging light conditions. The Hasselblad UV Filter boasts a broad UV cutoff range of 300nm to 410nm, effectively eliminating blue and purple flares to deliver accurate and faithful color reproduction. Its multi-layer nano coating not only enhances image quality but also provides the filter with water and oil resistance, anti-scratch, and anti-static properties. This ensures the filter's longevity and its ability to withstand harsh outdoor environments, making it a reliable choice for photographers seeking to enhance their image quality and protect their valuable lenses.