Nikon 52mm Circular Polarizer Drop-in Filter (C-PL3L) eliminates flares and ghosting delivering a more professional appearance. The filter are designed for telephoto lenses with a slip-in filter holder. It prevents focusing and metering errors that occur when using AF cameras fitted with normal polarizing filters. The filter is effect for color and monochrome photography. The Circular Polarizing Drop-in filter also serves as a lens protector from fingerprints, dust and moisture. Available to use with non-AF cameras.