Kenko Starry Night Prosofton Effect Filter, Diameter 49 mm, Reduction of Light Pollution & Soft Effect, for Shooting Landscapes, Made in Japan 549568

【Light pollution reduction & constellation accentuation】While suppressing the color tint caused by sodium-vapor lamps, mercury lamps, etc., the filter brings the light of the bright stars through, accentuating the constellations. 【Effect1. Light pollution-cutting effect to restrain color casts caused by city lights.】Sodium-vapor and mercury lamps and other streetlights cause yellow and orange color casts in the night sky, but "Starry Night Prosofton" cuts out only the light of specific frequencies that correspond to these colors, allowing for natural color reproduction. 【Effect 2. Soft effect to make the constellation picture stand out while the landscape and background remain clear.】A soft effect that makes picture of bright stars blur beautifully and brings constellations to life. "Starry Night Prosofton" is equivalent to "Kenko PRO1D Prosofton Clear(W)". The softening effect is applied only to point light sources such as stars, and does not affect the surrounding scenery, making it suitable for starry landscapes or when you do not want to apply softening effects to anything other than stars. 【Works perfectly with wide-angle lenses】 Since two effects can be achieved with a single filter, it eliminates the need for stacking filters and reduces the risk of vignetting and flare. Filter diameter: φ49mm / Made in Japan