The Tiffen 85 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 linear polarizing aspect of the filter helps to 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.
- 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 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.