Radiant white clouds against a deep blue sky or the deep colors of fall foliage don't happen by chance. B+W polarizing filters (polarizers for short) augment the purity of the intrinsic colors and increase color saturation and are among the most important filters for analog and digital photography. Because the filter mounts rotate, the polarization effect can be visibly controlled in the viewfinder or on the monitor display.
For this high-end polarizing filter the foil pieces are selected individually for maximum color neutrality. Following cementing between high-grade optical glass, additional grinding and polishing takes place. This guarantees outstanding sharpness even with very bright, apochromatic lenses. The new generation of Käsemann High Transmission (HTC) polarizing filters is fitted with a new polarizing foil, which has higher translucency (transmission), yet still provides outstanding effectiveness. The filter extension factor is only 2 to 3, equivalent to approx. 1 to 1.5 f-stops.
B+W standard circular polarizing filters are equally suitable for both analog and digital cameras. The filter is of high optical quality and designed for all cameras, with or without internal measuring devices.