Schneider 138mm Circular True-Pol Polarizer

Schneider 138mm Circular True-Pol Polarizer
    MSRP: 450.00

    Price: $350.00

    Code: 68-013138

    Schneider 138mm Circular True-Pol Polarizer
    Schneider offers a circular True-Pol Polarizing filter for cameras which use polarizing elements in the beam-splitters of the viewing system, such as ARRI 435 and the Movie-Cam Compact.

    Beam splitters send light in two directions: to an eye-piece and to a video tap. Light in a cameras viewing system can become polarized, and when a standard (linear) polarizing filter is attached to the lens, the light becomes cross polarized. This hinders visibility and may create total black-out of the viewing image and/or the video tap.

    Schneider Circular Polarizers feature a two layer design to prevent this blackout. The first layer is made up of the same polarizing material used in all True-Pol filters; the second layer is a 1/4- wave retarder plate which effectively prevents cross-polarization.

    Polarizers are commonly used to control glare on water and to allow the camera to see below the surface. They are also used to reduce glare on car bumpers and to control reflections on plate-glass windows. Polarizers are so versatile that they can perform the opposite functions as well. Some cinematographers use polarizers to increase or enhance reflections, simply by changing the filter's setting. There is virtually no limit to the new ways Directors of Photography find to use effective polarizers. Virtually any subject involving glare or reflections, or that is illuminated with specular light, can be improved through the skillful use of a quality polarizing filter.