Features: Neutral Density (ND) filters reduce the intensity of light without significantly altering color. ND filters provide various stop reductions and light transmission levels, making them suitable for different shooting conditions such as portraiture and waterfall photography. Enable the use of slow shutter speeds in bright sunlight. Rotating the filter ring adjusts the density, offering 2 to 8 stops of light reduction. Slim profile design helps prevent vignetting, especially when using wide-angle lenses. Notice: Actual color may vary slightly due to differences in monitor displays and lighting conditions. Allow 1-3 cm variation due to manual measurement. Specification: Material: Aviation aluminum Size: 11x11x2.5 cm Diameter options: 37mm / 43mm / 46mm / 49mm / 52mm / 55mm / 58mm / 62mm / 67mm / 72mm / 77mm / 82mm Thickness: 6.9-7.5mm Package List: 1 x ND Filter