Ultra Polarizer - Tiffen Linear Ultra Pol and Circular Ultra Pol Filters offer the best polarization effects available for professional motion picture and television work. They extract the maximum of unwanted glare from the scene and render crisp white clouds against a dramatically dark blue sky, like never before.
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; Linear Ultra Pol filters excel in traditional applications.
Circular polarizers are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems and video cameras without problems).
85 Filter - Using tungsten film in daylight will produce a bluish cast in the photograph. The 85 series will produce natural colors when shooting with tungsten film outdoors. Whereas the 85 series is used for tungsten film under daylight conditions, use the 80 series of filters when using daylight film under tungsten lighting.
This filter is glass and measures 75 x 100mm (3 x 4") x 4mm thick.
- A #85 filter will produce slightly cooler results than an 85B
- 85 Series Color Conversion Chart
- An 85 decreases the color temperature from 5500-3400 K
- An 85A decreases the color temperature from 5500-3100 K
- An 85B decreases the color temperature from 5500-3200 K
- An 85C decreases the color temperature from 5500-3800 K