The Clear-Night Filter for Sigma 14-24mm f/2.8 DG DN Art Lens and 24mm f/1.4 DG DN Art Lens for Sony E from Haida is designed to reduce the appearance of light pollution in images or video that include the night sky, and to minimize illumination from artificial light sources. This effect can be obtained when the filter is used on a digital camera system with the daylight white balance setting selected.