Formatt BF 82-CP2000RH 82mm HD Circular Polarizer Filter

Formatt BF 82-CP2000RH 82mm HD Circular Polarizer Filter produces the same effect as a linear polarizer, deepening skies and minimizes reflections, but is used in cameras where polarizing elements are used in the beam-splitters of the camera.

If you use a linear polarizer filter with such cameras, the light can become cross polarized (giving the same effect as using two polarizer together). Circular polarizer are made from a different polarizing material than linear and will usually prevent the cross polarization.