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Thursday, October 27, 2016
  • Schneider Circular True-Polarizing Filter (4 x 5.65")

Schneider Circular True-Polarizing Filter (4 x 5.65")

BP #: BW-68-013156  |  MFR #: 68-013156

Availability: Call for availability


Quick Overview



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. This filter may also be required on certain high definition video cameras with complex optical blocks such as the Sony PMW-EX1, PMW-EX3, and PDW-700 which polarize the red an blue channels more than other cameras and therefore require a circular polarizer to prevent cross polarization and associated color shift in the image.

Beam splitters send light in two directions: to an eye-piece and to a video tap. Light in a camera’s 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.

Type Circular True-Polarizer
Size 4 x 5.65" (100 x 140mm, 4mm thick)
Grade Not Applicable
Filter Factor Between 2.3 and 2.8 (approx. +1.3 stops)
Multi-Coated Yes
Rotating Not Applicable
Effect Removes reflections and increases color saturation without affecting the overall color balance
Application Nature, travel, outdoor photography
Color Temperature Not Applicable
Construction Water White Schott Glass
Front Filter Thread Size Not Applicable
Front Lens Cap Size Not Applicable