Key benefits Clearer, sharper images: multilayer coating filter with transparency and uniformity reduces reflections and preserves detail for better photo and video quality. Durable, weatherresistant protection: hardened super waterproof nano coating repels water and resists wear, protecting the optical surface in wet or harsh conditions. Wider field of view and practical close focus: 112° angle for expansive shots and a minimum focusing distance of 30–40 cm for nearer subjects. Key features Coating and material: hardened super waterproof nano coating plus multilayer coating filter for longlasting clarity and reduced glare. Field of view: 112° wideangle coverage ideal for landscapes, group shots, and wideaction scenes. Close focus: minimum focusing distance 30–40 cm to capture subjects at moderate close range without losing sharpness. Size: maximum diameter 17X23.1 (use this dimension to confirm fit before ). Why customers need this product Improves image quality while protecting your lens surface from water, fingerprints, and light wear. Delivers dependable performance outdoors or in variable environments where moisture and reflections can degrade results. Offers a practical wideangle view without sacrificing clarity, making it useful for both stills and video. Compatibility and sizing Designed to be used with devices or lens mounts that accept a maximum diameter of 17X23.1. Verify this measurement on your camera or accessory to ensure proper fit. Practical use scenarios Outdoor and travel photography: Shoot landscapes and group photos with a 112° field of view while the waterproof nano coating protects the optics in rainy or humid conditions. Action and water sports: Capture wideangle action shots near water—coating resists splashes and helps maintain clear images. Vlogging and wide interior shots: Use for handheld or mounted video when you need broader framing and reliable image uniformity at 30–40 cm subject distance. Performance notes Expect improved light transmission and reduced unevenness across the image thanks to the transparency, uniform multilayer coating. Use the minimum focusing distance (30–40 cm) to frame closer subjects; confirm compatibility using the maximum diameter 17X23.1 before installation.