Tiffen 105mm Coarse Thread 85 Linear Polarizer Filter (Non-Rotating)

Description

The non-rotating Tiffen 105mm Coarse Thread 85 Linear Polariser Filter combines both an 85 colour conversion filter with a linear polarising filter to blend the effects of both filter types into a single, convenient solution.

The 85 colour conversion aspect of the filter provides a warming effect and decreases the colour temperature from 5500K to 3400K, allowing the use of tungsten balanced film in daylight conditions.

The linear polarising aspect of the filter helps to reduce reflections and glare by filtering out light that has become polarised 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 polariser differs from a circular polariser 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 dependant 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, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings. The non-rotating design of this filter is best-suited for use with lens hoods, adapters, or other rings for rotational control over the polarising substrate.

Key Features

• Linear polariser and 85 amber colour conversion filter combination.
• Total filter factor of approximately 6x requires 2.6 stops of additional exposure for normal results.
• Warming 85 colour conversion filter decreases colour temperature from 5500K to 3400K for using tungsten-balanced film in daylight conditions.
• Polariser helps to reduce reflections and glare by filtering out light that has become polarised due to reflection from a non-metallic surface.
• Clears up haze in distant landscapes and provides more saturated, vivid colours.
• Strongest polarising effect when used at a 90° angle from the sun.
• Non-rotating design is best-suited to use with lens hoods or adapter rings in order to best control the polarising effect of the filter.

Specifications