The StarScape filter selectively absorbs specific wavelengths of strong light emitted by artificial urban light sources, which are the main cause of light pollution, while allowing the wavelengths from celestial bodies to pass through.
Please be cautious and keep in mind the vignetting possibilities, when you shoot with Marumi M100 Square Filter System under the conditions; - wide aperture of more than f/4.0 - shorter focal length than 17mm - with Polarizer for M100
