Become a better photographer with the Starblitz neutral grey filter 1000x 49mm ND filter. Its main advantage is that it reduces the amount of light that ends up on the camera’s sensor, allowing you to work with longer shutter speeds. It also captures striking photos of objects in motion. 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 stunning depth of field effect. The Starblitz neutral grey filter 1000x 49mm ND Filter has a 49 mm filter diameter, making it compatible with a wide range of different lenses. The ND factor of 1000 indicates a transmittance of 0.1%, so you can set up an exposure a thousand times longer.