Marumi 39mm Exus Lens Protect Filter is a lightweight and durable filter which is designed for general protection of lens. This is optically clear filter has less than 0.3% reflectivity and does not affect the overall image quality while helping reduce dust, scratches, moisture and other elements from damaging your lens. This filter features an anti-static coating that also provides water and oil resistance to protect the filter from dust, dust and moisture and also to aid in cleaning of the filter substrate. The surface of the filter repels water spots and provides resistance to fingerprints which appears on the surface can be easily removed. Its thin filter ring design is ideally suited for use with wide-angle lenses and blocking ridges, a satin finish and black ink coating to provide a surface reflectivity to reduce the likelihood of lens flare and ghosting. This Exus lens protect filter is essential gear for any style of SLR photography.