The Cokin 1-stop Neutral Density filter is a solid ND filter providing 1-stop exposure reduction. This creates an overall darkening of the image, allowing you to photograph with a wider aperture or slower shutter speed than current lighting conditions allow. Slowing your exposure time lets you convey movement in subjects like water and clouds. Increasing your aperture lets you create a shallower depth-of-field which isolates your subject from the background. Neutral density filters do not affect colour and can be combined with other filters to create more dramatic effects. • Reduces Exposure over total image area • Manufactured with C39 Optical Resin • 1-stop light reduction • Allows for creative control of shutter speed and aperture What's in the box 1 x Cokin ND2 - 1-Stop Neutral Density Resin Filter Limited 1-Year Warranty