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. This filter measures 4 x 4" / 101.6 x 101.6mm.
- 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.
TIP HOW TO PROLONGING THE LIFE OF YOUR FILTERS
Filters, like all crafted optics, are susceptible not only to breakage, but to premature aging caused by environmental factors. Most filters are made up of several layers of materials consisting of glass, dyes, optical cements, chemical compounds, particles etc. Even with protective measures employed, there are many factors that can still affect the longevity of the filter: moisture (prolonged exposure to humidity), excessive heat and excessive light are the most common environmental causes that can affect the filter’s chemistry over time.
To protect your filters and keep them in great working condition for a long time (along with the rest of your camera gear) we recommend making sure to keep the filters stored in a dark, cool, and dry place when not in use. The use of filter pouches or specialized cases will also keep your filters safe from breakage when not in use. If you are in a humid environment, the addition of fresh silica gel packs or a dehumidifier in the room they are stored is also highly recommended. Protecting your filters as you would your camera lenses will ensure many years of use of your filters.
What do you recommend cleaning filters with?
Hand blower first, if it's just light dust, that usually handles
it. If you need to clean further, a Kim
Wipe sprayed with Tiffen/Pancro Lens Cleaner, work in a circular motion from
the middle out.
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