This UV filter is a useful tool to minimize the impact of Ultraviolet Rays. Ultraviolet Rays can distort colors and add unwanted sun glare in photos, and atmospheric haze can turn an otherwise great photo into a hazy, blurry mess.This lens will not impair original colors or focus, making it possible to leave attached to your camera at all times. That being true, this filter is not just a UV shield, but serves as a constant Protector for your main lens. Protects your lens from all dust, dirt, scratches and fingerprints. This basic clear glass filter is a must for every lens. You never take it off the lens. If you scratch or break the filter, you can easily replace it, save the lens!It is made of “High Light Transmission” glass which will not negatively impact your exposure.