- Some camera-related optics, like a video tap, employ a partially silvered mirror, or beamsplitter. This may require the use of a Circular Ultra Pol, which places a clear, quarter-wave retarder on the camera side of the filter, effectively de-polarizing the light being recorded, after the image enhancement is done. Circular Ultra Pol filters are suitable for virtually all situations;
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Camera •   Filters & Diopters •   4x4 Ultra Circle Polarizer filter



Description:
- Some camera-related optics, like a video tap, employ a partially silvered mirror, or beamsplitter. This may require the use of a Circular Ultra Pol, which places a clear, quarter-wave retarder on the camera side of the filter, effectively de-polarizing the light being recorded, after the image enhancement is done. Circular Ultra Pol filters are suitable for virtually all situations;


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