Detailed Product Description

size: 25mm 28mm 30mm 30.5mm 34mm 37mm 40.5mm 43mm 46mm 49mm 52mm 55mm 58mm 62mm 67mm 72mm 77mm 82mmThe main purpose of using neutral density (i.e., ND) filters is to reduce the amount of light that can pass through the lens. As a result, if a shutter speed is kept the same, after adding a neutral density filter, a larger aperture must be used to obtain the same exposure. Similarly, if an aperture is kept the same, after adding a neutral density filter, a slower shutter speed must be used to obtain the same exposure.