Cavision 4 x 4" Linear Polarizer Filter (3mm Thick)

The Cavision 4 x 4" Linear Polarizer Filter is compatible with filter holders that can accommodate 3mm thick, 4 x 4" rectangular filters. It helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. 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.