52mm Multi-Coated professional 3 Piece Lens Filter Kit (UV-CPL-FLD) For The Olympus 12-50mm f/3.5-6.3 ED M.Zuiko EZ Micro 4/3 Lens with HeroFiber Ultra Gentle Cleaning Cloth Serves as a permanent Lens Protector from scratches, scuffs and smudges Prevents loss of sharpness & contrast by absorbing the ultraviolet rays which often makes outdoor photographs hazy and indistinct. Enables colors to become more saturated and appear clearer, with better contrast. Corrects the green cast created when using daylight under fluorescent lamps with daylight tubes. It restores the natural colors of your shooting objects. Multi-purpose fine-weather filter for colors as well as black and white photos