Size:30mm Zeikos 30mm Glass Multi Coated 3 piece Filter Kit Included in this kit are 3 essential filters available for your camera kit. The UV, protects your lens against scratches, the CPL removes unwanted glare and reflections, and the FLD filter removes the greenish cast caused by fluorescent lights. Whether you are a beginner, advanced shooter, or whether you take stills or video, these affordable and highly useful filters help improve the image quality of the pictures you take.Features:UV: Ultraviolet FilterTheÿUV Filterÿis a general use, clear filter designed to absorb ultraviolet light & reduce theÿbluish cast of daylight. Aside from the reduction of unwanted blue casts.ÿThis UV filterÿis also useful as a general protective filter to leave on lenses at all times.CPL: Circular PolarizerÿTheÿCircular PolarizerÿFilter helps to reduce reflections & glare by filtering out light that hasÿbecome polarized due to reflection from a non-metallic surface. FLD: Fluorescent to Daylight FilterThe FLD Fluorescent Filterÿfor Daylight Film is a color correction filter that is designed to reduceÿgreen casts when shooting with daylight film under fluorescent lighting.