Schneider Optics 4x4" Circular True Polarizing Filter

Helping to reduce reflections and glare, the 4 x 4" Circular True-Pol from Schneider is a circular polarizer well-suited for cine applications. This filter suppresses reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface, which results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when working in hazy conditions. Compared to the traditional True-Pol linear polarizing filter, this circular polarizer is ideal for preventing viewfinder blackout when used with cameras featuring polarizing elements in the beam-splitter of their viewing system, such as the Arriflex 435 and MovieCam Compact.

The filter is constructed by laminating the polarizing film and a 1/4-wave retarder plate between two sheets of clear water-white optical glass. An Edge Seal process is then used to guard against edge chipping and delamination, as well as contribute to reducing edge reflections and flare.