Vivitar multi coated essential graduated 6 piece color filter kit is constructed of high quality glass and nested into an aluminum alloy rotating frame to allow desired placement of color provide a gradual color transition for a smooth blending effect. Graduated filter give your landscape and skin texture a more colorful touch and is perfect for changing the mood of a picture. Side pinch lens cap snaps unto lens to protect from scratches, moisture, dirt and fingerprints . 3 piece filter kit from Vivitar includes UV, CPL, and ND8 filters. Filters are constructed from high quality optical glass and nested in an Aluminum Alloy frame for maximum clarity and vivid picture. UV, or Ultraviolet Filter is a general use, clear filter. It absorbs ultraviolet light, eliminates haze, and reduces bluish casts of daylight. UV filters serves as permanent lens protection agains dirt, dust and stain. CPL, or Circular Polarized Filter, filters out Polarized light reducing reflection from non-metallic surfaces, increasing the contrast, enhancing color and eliminating haze. With 67mm Vivitar 3pc Filter Kit UV/CPL/FDL