Cokin Z-Pro Series Nuances Clearsky Filter 100mm NNZSKY VKS9_B2AKI29

It can be applied to reduce the appearance of light pollution in images or video that include the night sky and illumination from artificial light sources. This effect can be obtained when this filter is on a film camera system with daylight film installed or on a digital camera system with its daylight white balance setting selected. Light pollution occurs in areas of the night sky that are above or near concentrated and intense sources of artificial light such as cities. These light sources can include exterior and interior lamps for commercial or residential buildings brightly lit advertisements such as billboards streetlamps as well as sports and entertainment venues. Together they can result in a type of light pollution known as sky glow where individual stars the Milky Way and other astronomical features in the night sky are obscured. Additionally artificial lights clustered together can become difficult to individually discern. Light pollution from these cluttered sources can become a source of distraction within an image and can resemble overexposed areas of glare. When the Cokin Z-Pro Series NUANCES Clearsky Filter can improve the results of nighttime images by absorbing the yellow light from sodium-vapor lamps or mercury-vapor lamps common light sources within urban areas. By preventing the dominant wavelengths of light associated with the color of those lamps from being recorded the visibility of astronomical objects is enhanced and artificial light sources are more clearly defined with less glare and improved contrast. This filter is constructed from optical-quality neodymium glass for clarity as well as color fidelity.