The Hoya Variable ND Filter provides you with a variable ND filter that allows you to control the intensity / amount of light entering the camera. You can simply turn the filter to change the light reaching your camera sensor from lighter to darker. This way, you can play with different shutter speeds and apertures, even when shooting in bright sunlight. The filter also gives you the possibility of shooting with a longer shutter speed. This enables you to create motion blur in moving water when you're shooting a waterfall, for example. The Hoya Variable ND Filter is also very suitable for recordings. It allows you to work with a small aperture with an increased depth of field, even in broad daylight. The filter can be set from 1.5 to 9 stops of light exposure.