The Viltrox Pro series Ultra Slim MC UV Protection Filter in 72mm size is a professional imaging-grade accessory designed for camera lens protection. This ultra-thin filter features multi-layer coating technology that achieves 99.5% light transmission in the visible spectrum (420-700nm), ensuring minimal light loss and maintaining image quality. The 18-layer high-transmission coating provides uniform light distribution with only 0.3% surface reflectivity, effectively reducing lens flare and light scattering while delivering balanced color performance. Constructed from B270 professional optical glass, this filter offers excellent optical clarity and durability with high scratch resistance. The UV cut-off coating effectively blocks ultraviolet rays below 390nm, preventing the bluish tint that can occur in photos due to excessive UV exposure. The filter features a waterproof and anti-oil stain coating with super hydrophobic properties, repelling water droplets and resisting oil adhesion for easy maintenance. The precision aluminum alloy frame measures just 3.2mm in thickness, making it suitable for wide-angle lenses without causing vignetting or dark corners. The matte-coated frame absorbs stray light and reduces reflections while providing high strength, corrosion resistance, and excellent thermal performance. With a 96HD high hardness rating, this filter is built to withstand various shooting environments while maintaining optical integrity. The filter maintains high parallelism and surface flatness through multiple grinding precision processing techniques, ensuring consistent optical performance across the entire surface. This professional-grade UV protection filter is designed to provide reliable lens protection without compromising image quality, making it suitable for photographers who require both optical performance and equipment protection in their work.