Manufacturer produces adjustable ND gradual change gray mirror Action camera filter gray dimmer mirror SF package

ND mirror, also known as medium gray density mirror, is used to filter light. This filtering effect is non-selective, which means that the reduction ability of ND mirrors to various wavelengths of light is equal and uniform, only playing a role in weakening the light, without any impact on the color of the original object, so it can truly reproduce the contrast of the scene. The main purpose of using an ND lens is to prevent overexposure. If the light is too bright, it is difficult to choose a slower shutter speed for shooting. In this case, using an ND lens to reduce the amount of light entering the lens allows for slower shutter speeds for shooting. For example, if you need to shoot outdoors in strong sunlight, or if you need to shoot a waterfall with a slow shutter speed under normal lighting conditions for a longer exposure time to show special effects such as blurred water flow, an ND mirror is required.