Hoya 72mm NXT Plus Circular Polarizer Slim Frame Glass Filter

About this ItemCircular Polarizer Filter1. 7x Filter Factor,0. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges and filters this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non metallic surfaces and an increase in the saturation of skies and foliage.