The 3-Piece Lens Filter Kit 58mm is a set of three lens accessories designed for cameras with a 58mm filter thread. UV Protection: Protects the lens from dust, scratches, and moisture while reducing ultraviolet light. Circular Polarizer (CPL): Removes unwanted reflections from non-metallic surfaces (water, glass) and increases contrast, often used for enhancing blue skies. Colour Filter - P: Purple lens filters are specialized tools used to modify light for creative effects, primarily by absorbing green and blue light to increase contrast.