Ultra-low-reflection ULC coating with a single-sided reflectivity of 0.1% minimizes ghosting. High-quality optical glass provides excellent transmittance across the entire spectrum. Further refined water-repellent and anti-fouling coating. [PRIME Lens Protect A77] Protect your precious camera lens with the PRIME Lens Protect A77 protective filter. Ultra-low-reflection ULC coating with a single-sided reflectivity of 0.1% minimizes ghosting. A protective filter's reflectivity directly affects the occurrence of ghosting and flare. The lower the reflectivity, the less likely ghosting and flare will occur. Marumi's ultra-low-reflection ULC coating achieves a single-sided reflectivity of 0.1%. Compared to conventional protective filters, it minimizes the effects of ghosting. Excellent surface precision proven by transmission surface precision measurements. Since the flatness of filter glass generally affects the lens's resolving power, maintaining a high level of flatness is essential. Filters with poor flatness often exhibit noticeable "Newton's rings." PRIME Lens Protect has no visible Newton's rings and maintains high surface accuracy. It uses a conventional filter frame, so there is no risk of glass falling off or strange noises. It provides solid lens protection while maintaining precise surface accuracy. High-quality optical glass achieves excellent transmittance across the entire spectrum. PRIME Lens Protect prioritizes optical performance, and instead of the B270i commonly used for filter glass, it generously uses OHARA's S-BSL7, which is also used for optical glass and prisms and offers superior transparency and consistent uniformity. Combined with the ultra-low-reflection ULC coating, it achieves superior transmittance, even surpassing that of EXUS Lens Protect Mark II. Further refined water-repellent and dirt-resistant coating: The standard water-repellent and dirt-resistant coating has also been strengthened to repel water droplets and fingerprints. ■ Specifications ■ Filter diameter: 77mm□