The UV filter is a transparent all-purpose filter that absorbs ultraviolet light. It adds no extra color or contrast, allowing you to combine it with other filters. The UV filter is also useful as a general protective filter that can be left on the lens at all times. Filters help reduce the ingress of dust and moisture into the lens element and provide additional protection in case of a fall or scratch. This filter is perfect for outdoor shots, reducing blue tones in UV-rich environments, increasing image contrast, and removing light haze or fog (e.g., at the sea or in high mountains). It protects the front lens element from damage.