Compatible with lenses with 72mm filter threads, this 1 to 5-stop 2-in-1 Combination Variable ND & CPL Filter from Neewer combines a neutral density filter with a circular polarizer. The variable ND2-ND32 filter reduces 1-5 stops of light, which allows you to add blur and a sense of movement to an image. Simultaneously, the circular polarizer component of this filter reduces reflections and glare. Designed with 7.6mm thickness, this filter also avoids possible vignetting on wide-angle lenses. Constructed with optical glass and an aluminum frame, it has 30 layers of nano coating for an anti-oil, anti-dust, anti-scratch, and water-repellent surface that can keep your lens safe.