Features: This set includes one UV filter, one CPL filter, one star 8 filter, one macro close-up +4 filter and carrying bag. UV Protective Filter: Prevents loss of sharpness and contrast by filtering out UV rays and Haze; Protects Lens from scratches, scuffs and smudges. CPL Circular Polarizer Filter: Increases color and contrast by removing unwanted reflections from non-metallic surfaces such as water or glass; Reduce glare and reflections significantly from non-metallic surfaces. Macro Close-Up Filter: decreases the minimum focusing distance of virtually any lens to Macro Lens. Star filter create points of light, like stars, streaking outward from a central light source. Dual Thread design makes it easy to combine close up filters to create extreme macro effect or add other optics, such as Polarizing, UV, Warming filters. Equipped with a knurling edge for easy attachment and removal. This filter is compatible with 52mm lenses.