Improve your photography with the Starblitz neutral grey filter 1000x 58mm ND filter. The most notable feature of the ND (neutral-density) filter is that it partially blocks light coming into the lens, allowing you to use a longer shutter speed. It also smooths out moving objects, such as flowing water. Another neat bonus of all ND filters is that you can use a wider aperture with the same ISO sensitivity and shutter speed for a striking depth of field effect. The Starblitz neutral grey filter 1000x 58mm ND Filter features a 58 mm filter diameter, making it compatible with all lenses of the same diameter. The ND factor of 1000 indicates a light transmittance of 0.1%, so you can set up a 1000x longer exposure.