The JJC S+ L39 Ultra Slim UV Filter in 40.5 mm with a silver finish is a high-quality optical accessory for camera lenses. This ultra-thin filter features a 40.5 mm thread, compatible with L39 bayonet lenses and similar systems that require this filter size. Made from premium optical glass, the UV filter effectively blocks ultraviolet light while providing excellent light transmission for clear, natural-looking images. Its ultra-thin design minimizes vignetting and ensures compatibility with lens hoods, making it ideal for wide-angle shots. The silver anodized aluminum frame ensures durability and corrosion resistance with minimal weight addition to your lens equipment. Multi-layer coating technology reduces reflections, lens flare, and ghosting while maintaining image contrast and color accuracy. This filter serves as a permanent lens protection against dust, moisture, and scratches without compromising optical performance. The precise craftsmanship allows for smooth attachment and detachment while securely fastening to the lens. Manufactured in Japan to the highest standards, this filter offers reliable performance for professional photographers and enthusiasts seeking uncompromised image quality. The neutral color temperature retention ensures accurate white balance under various lighting conditions. Suitable for both digital and analog photography applications, this UV filter is an essential accessory for lens protection and image quality enhancement.