Take better photos with the HOYA ND 8X PROND 49mm ND filter. The filter's main advantage is that it partially blocks light coming into the lens, allowing you to work with longer shutter speeds. It also captures objects in motion and adds a blurred effect. Another popular feature of 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 HOYA ND 8X PROND 49mm ND Filter has a 49 mm filter diameter, making it compatible with a wide range of different lenses. The Slim construction means you don't have to worry about the vignetting effect, often created by the filter frame. The ND factor of 8 indicates a light transmittance of 13%, i.e. a 8x longer exposure time.