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Schneider's 85 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
Beam splitters send light in two
directions: to an eye-piece and to a video tap. Light in a cameraﾒ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
To ensure correct placement on the lens
barrel Schneider clearly marks the outer surface on all Schneider
Circular 85 True-Pol Polarizing filters.
Having an extinction ratio of ER 374, the
Schneider Circular 85 True-Pol is 12- times more effective than other polarizing
filters, and is unmatched in its ability to:
The Circular 85 True-Pol Polarizing filters enable you to
achieve a level of optical performance previously unavailable to
The polarizing film in a Schneider
Circular 85 True-Pol
filter is laminated between two pieces of Schneiderﾒs crystal-clear,
water-white optical glass. The filter is protected against edge-chipping
and delamination by Schneiderﾒs unique Edge Seal, which also
effectively reduces edge-reflections and flare. The absolute clarity of
the glass combined with advanced polarizing material make True-Pol
filters particularly effective on demanding scenes, as when shooting
through windshields in rigged-cars. On such shots, Directors of
Photography have found that Schneider True-Pol filters capture more
color saturation, wider tonal range and much more contrast inside the
car. Like all filters in the Schneider line, Circular True-Pol filters are
precision polished to the highest possible standards, meeting the most
demanding specifications for optical flatness.
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