This FOTGA fader ND filter is made of optical glass, offering a better image resolution, avoiding any colour cast. This Fader ND works great both for photography and videography. Features: You don't have to carry a bunch of filters for shooting, one filter give you from the range ND2 to ND400. Neutral density (ND) filters can reduce the intensity of light without appreciably changing its color. Thin filters are essential for avoiding vignetting when shooting at wider angles. Apply slow shutter speed under strong sunlight exposure, large aperture is available to create depth of field easily. The fader ND filter is suggested to use with wide and standard lens to obtain the best performance. Specification: Shell Color: Black Filter Color: Neutral Grey Material: Aluminium Alloy + Optical Glass Option: 52mm, 58mm, 67mm, 72mm Weight: Approx. 46~72g Package List: 1 * Fader ND Filter (ND2-ND400) 1、You don't have to carry a bunch of filters for shooting, one filter give you from the range ND2 to ND400. 2、Neutral density (ND) filters can reduce the intensity of light without appreciably changing its color. 3、Thin filters are essential for avoiding vignetting when shooting at wider angles. 4、Apply slow shutter speed under strong sunlight exposure, large aperture is available to create depth of field easily. 5、The fader ND filter is suggested to use with wide and standard lens to obtain the best performance.