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The Tiffen 6 x 6" Round 85 Ultra Pol Linear Polarizer Filter combines both an 85 color conversion filter with a linear polarizing filter to blend the effects of both filter types into a single, convenient solution.
The 85 color conversion aspect of the filter provides a warming effect and decreases the color temperature from 5500K to 3400K, allowing the use of tungsten balanced film in daylight conditions.
The Ultra Pol linear polarizing aspect of the filter helps to greatly reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A linear polarizer differs from a circular polarizer in that it does not supports use of a camera's autofocus or auto exposure functions; it is best suited for use with manual cameras, such as view cameras, that are not dependent on internal mechanisms to determine focus or metering settings.
There is a total filter factor of about 6x, requiring an increase of 2.6 stops for normal exposure. Tiffen filters are made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. This filter measures 6 x 6" / 152.4 x 152.4mm.
Ultra Pol linear polarizer and 85 amber color conversion filter combination.
Total filter factor of approximately 6x requires 2.6 stops of additional exposure for normal results.
Warming 85 color conversion filter decreases color temperature from 5500K to 3400K for using tungsten-balanced film in daylight conditions.
Polarizer helps to greatly reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
Clears up haze in distant landscapes and provides more saturated, vivid colors.
Strongest polarizing effect when used at a 90° angle from the sun.
Compared to a standard polarizer, the Ultra Pol design strives to increase the polarizing effect for enhanced reduction of reflections and greater color saturation.
Amber color conversion and linear polarizer combination
6 x 6" / 152.4 x 152.4 mm
Approx. 6 (2.6 stops)
Polarizer eliminates reflections and haze and improves color and tonal saturation 85 decreases color temperature
85: 5500K to 3400K
Tiffen 6 x 6" 85 Ultra Pol Linear Polarizer Filter