The Polaroid Pro Series UV Filter is a clear filter that helps to absorb ultraviolet light. No additional coloration or contrast is in the filter, allowing you to pair this filter with other filters as well. You can also use it as a general protective filter and leave it on the lens at all times. This will help to keep your lens free of dust and moisture and it will also keep the lens protected from any scratches. The Multi-Coating and water repellent is both for flare protection as well as a protective surface. Polaroid Pro Series UV filters are constructed from high quality German Schott glass and features a ultra slim filter ring.