Professional High Quality 3 Piece Filter Set For Canon SLR Cameras That Have A Canon EF 50mm f/1.8 II Lens This 3 Piece Filter Set Icludes The Following: UV: Protects your camera's lens from scratches, dust, dirt, moisture, and fingerprints, while reducing unwanted ulra-violet light. CPL: Polarizers let you acheive vibrant color saturation, reduce or eliminate glare from non-metallic object. F-DL: Fluorescent light correction filter gives true-to-life color rendition. Fluorescent filter dramatically increases color satruation.