A marumi dhg nd (digital high grade natural density) is a gray filter that allows you to control the bright light entering the lens. These nd16 filters are multi-coated, the reflection of the incoming light is greatly reduced without disturbing the color balance. Usage grey filter dhg nd16 77 mm if there is too much light or you want to use a different aperture with the same shutter speed, for example, you can use a gray filter. The light intensity is reduced by the filter. With the marumi dhg nd16 filter, you can slow down a certain aperture value by 4 stops. You do not need to pinch the aperture further if you want a slower shutter speed. This slower shutter speed enables you to capture a movement in an image and prevents the moving image from being ''ghosted''. A good example is a picture of running water as shown in the pictures. Features grey filter dhg nd16 77 mm the dhg filters are made of extra strong tempered glass and have a multi-coating which makes them moisture, scratch and dirt resistant. Because of this, the dhg filters are also easy to clean. Because of the thread, stacking multiple filters is possible, so you can combine different filters with each other. Prevents ghosting and reflection optimum light transmission through multi-coating with the right diameter suitable for every camera lens metal housing without vignetting (no rounding in the corners) also suitable for wide-angle lenses and fullframe cameras black coating on the outer edge of the lens for minimal reflection