Features: Neutral Density (ND) filters can reduce the intensity of light without appreciably changing its color. ND filters have different stop reduction numbers and transmittance thus generated can be applied for different shooting conditions, such as portraiture, water falls, etc. Apply slow shutter speed under strong sunlight exposure. Simply rotate the ring of this filter, it offers 2 to 8 stops added density. Slim profile design. Thin filters are essential for avoiding vignetting when shooting at wider angles. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Material: aviation aluminum Size: 11x11x2.5cm Diameter:37mm or 43mm or 46mm or 49mm or 52mm or 55mm or 58mm or 62mm or 67mm or 72mm or 77mm or 82mm Thickness:6.9-7.5mm Package List: 1x ND Filter Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.