NEEWER 2 in 1 58mm Variable ND Filter ND2-ND32&CPL Circular Polarizer Filter2 in 1 Variable ND and CPL Filter for 58mm Lenses This versatile filter combines variable neutral density (ND) and circular polarizing (CPL) effects in one convenient package. It's designed for lenses with a 58mm thread size. Key features: Variable ND effect from ND2 to ND32 (1 5 stops of light reduction) CPL effect to reduce reflections and enhance contrast Self locking technology minimizes vignetting on wide angle lenses Premium optical glass for