This Vivitar UV Filter is a multi-purpose, fine-weather filter that is designed to optimize your photography experience. UV filters block out unwanted ultraviolet light and prevents the UV "fogging/haze" effect", which can result in inaccurate color and lower the apparent sharpness. This filter is also ideal for protecting your valuable lens from scratches and dust, and it can be kept on the lens at all times. Perfect for digital, video and photo.