The Hoya 95mm Circular Polarizer Filter helps reduce reflections and glare by filtering light that has become polarized due to reflection from a non-metallic surface.

Light from the sun becomes naturally partially polarized due to the reflection of electrons off air molecules, causing the light to scatter into what appears as haze.

A polarizing filter organizes and filters this directed polarized light perpendicular to the reflected light, allowing much of this light to be absorbed.

This results in a noticeable reduction of reflections and glare from non-metallic surfaces and an increase in the saturation of the sky and foliage.

A circular polarizer differs from a linear polarizer only because it contains a quarter-wave plate in addition to the linear polarizing filter.

The addition of this quarter-wave plate is to circularize the linearly polarized light for the use of autofocus and exposure functions.

This filter is uncoated and has approximately 93% average light transmission. It is made from optical glass and precision aluminum alloy mountings.