The Urth 39mm UV Lens Filter Pro is a professional optical filter for photographers seeking enhanced image quality and lens protection. This filter, with a diameter of 39mm, features multi-coated optical glass that effectively blocks ultraviolet light while maintaining exceptional light transmission. The filter reduces atmospheric haze and minimizes blue casts in outdoor photography, resulting in clearer, more natural-looking images with improved contrast. Constructed with a slim aluminum frame only 4.5mm thick, this filter prevents vignetting even with wide-angle lenses and remains compatible with lens caps. The filter has a front thread for stacking additional filters if needed. The multi-resistant coating provides protection against water, oil, and dust, making cleaning straightforward and preserving optical clarity. Weighing approximately 15g, this filter adds minimal weight to your camera setup. The Urth UV Lens Filter Pro serves as a permanent protective layer for your valuable camera lenses, safeguarding the front element from scratches, dust, and moisture without compromising optical performance. The filter maintains color accuracy and sharpness across the entire visible spectrum and effectively filters UV light below 400nm. Suitable for various photography applications including landscape, portrait, and travel photography, this professional filter is designed for photographers who demand both protection and optical excellence from their gear.