【ZR Coat for Ultra-Low Reflection】 By employing the ZR coat, ultra-low reflection of less than 0.3% is achieved. This minimizes the impact on image quality caused by attaching the filter. This filter is recommended for those who prioritize quality. 【Black Ink Coating on Glass Edges】 Black ink coating is applied to the outer edges of the filter glass to prevent internal reflections as much as possible. 【Thin Frame Design Compatible with Ultra-Wide Angle Lenses】 While maintaining a standard glass thickness of 2mm, a high-precision machined aluminum frame is used to make the frame thinner. This allows for safe use with ultra-wide angle lenses. 【Includes a Dedicated Case】 A stylish, compact case is included. It can be opened easily with a single push. The highest-grade PL filter "Zeta Wide Band C-PL" utilizing superior optical technology and precision machining. The "Zeta" series is the highest-grade line of Kenko filters. These products utilize superior optical technology and precision machining. Usable for both digital and film cameras. Compatible with wide-angle lenses. C-PL filters provide the effect of removing surface reflections from water and glass, deepening the color of the blue sky, and making the colors of foliage, mountain surfaces, and buildings extremely vivid.