The Tiffen 105mm Ultra Pol linear polarising filter with coarse non-rotating thread allows for significant reduction of reflections and glare by filtering polarised light due to reflection on non-metallic surfaces. This results in a notable increase in saturation of skies and foliage, as well as a sharper image when shooting in hazy conditions. A linear polariser differs from a circular polariser in that it does not support the use of autofocus or automatic exposure functions of a camera; it is better suited for use with manual cameras, such as view cameras, which do not rely on internal mechanisms to determine focus or metering settings.

There is a total filter factor of approximately 4, requiring an increase of 2 stops for normal exposure. This filter is constructed from Water White glass and manufactured using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding it flat to a tolerance of 1/10,000th of an inch, then mounting it on precision metal rings. The non-rotating design of this filter is particularly suited for use with lens hoods, adapters or other rings for rotational control of the polarising substrate.



- Compared to a standard polariser, the Ultra Pol design strives to increase the polarising effect for greater reduction of reflections and enhanced colour saturation.

- Organises and filters directionally polarised light perpendicular to reflected light allowing absorption of much of the light.

- Reduces haze in distant landscapes and provides more saturated and vivid colours.

- Strongest effect when used at 90° to the sun.

- Water White optical glass for excellent clarity.

- Non-rotating design is particularly suited for use with lens hoods or adapter rings to better control the polarising effect of the filter.