SHENZHEN, China, July 08, 2025 (GLOBE NEWSWIRE) -- While blocking ultraviolet light is no longer the primary function of UV filters—thanks to advances in modern sensors and lens coatings—their role has evolved into something more practical: physical protection. A high-quality UV filter now serves as a reliable barrier against scratches, dust, moisture, and unexpected impacts—all without compromising optical performance. The K&F CONCEPT Nano-Xcel UV Filter is designed for this modern role. Engineered from 9H ...