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The H&Y PureNight 100mm filter reduces light pollution in the night sky to improve colour accuracy and clarity in night time city or landscape photography. It absorbs the yellow light from sodium-vapour and mercury-vapour lamps, or low CRI LED lighting, enhancing visibility of astronomical objects, and improving definition of artificial light sources with less glare and better contrast. Made from high grade optical glass with 9 layer coating on both sides, it is supplied in an H&Y magnetic filter frame, compatible with the K-Series holder or Lee, Hitech and NiSi holders which have been adapted.
Absorbs sodium-vapour light, mercury-vapour and low CRI yellow light.
9-layer coating includes a water and oil resistant top layer.
100x100mm size, complete with H&Y magnetic filter frame, for use with K-Series holder, or Lee, Hitech and NiSi holders which have been adapted with H&Y Filter Strips.