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Designed for night scape photography the HOYA STARSCAPE filter reduces light pollution generated by artificial lights common in cities. The HOYA STARSCAPE cuts light transmission in the area of the spectrum that is usually associated with light pollution from Sodium and Mercury-vapor lights common to most cities world-wide. Thus the filter provides a more clear image with natural colors and improved contrast in the night sky. The filter cuts off in the most natural way the transmission of light spectrum that is frequently presented in city environments and usually associated with Sodium and Mercury-vapor lights. Other similar filters that cut light pollution by special glass coating …