Filter Marumi STARSCAPE Professional Filter Series for demanding users. Marumi StarScape is a filter dedicated to astrophotography. Effectively cut off specific wavelengths in the range of 580-590 nm characteristic of urban and industrial lighting with an artificial light source (such as sodium lamps). This allows you to give the true beauty of the starry sky without polluting the yellow glow. StarScape has oleo and hydrophobic coatings that make the surface treated to oily fingerprints and the water build-up does not form stains but easy to remove drops. This makes Marumi StarScape filters extremely easy to clean while maintaining their high quality. The iltr is framed with a thin slim/wide ring, so that photos taken with ultra-wide lenses are not exposed to a side vignetting effect. StarScape is the latest star/night view filter originally developed by Marumi. Effectively cuts specific wavelengths that cause light pollution while making the most of the star colors. The biggest feature of Marumi is the balance of mixing special ingredients that are made in glass to absorb light waves that cause light pollution.