Because capturing the perfect shot matters, the Hoya HD3 Circular Polarizer camera filter is designed with an enhanced 16-layer ultra-smooth, ultra-hard nano-coating. This advanced coating technology is twice as sharp and 200% harder than its predecessor, the award-winning HD2 Circular Polarizer. The HD3 Circular Polarizer filter is not just about toughness it's also about delivering exceptional image quality. It incorporates Hoya's exclusive High-Transparency polarizing film, which allows for 2/3rds of a stop more light transmission than standard circular polarizing films. This increased light transmission results in more saturated colors and superior clarity, making your photos stand out. The HD3 Circular Polarizer is faster and sharper, embodying the ""Hoya Tough"" philosophy. This 77mm HD3 Circular Polarizer Filter is an essential tool for professional photographers and videographers, helping to reduce glare, enhance color saturation, and improve overall image quality..