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The Kood A Series Linear Polarizer Filter is designed to be used in a Kood A Series or Cokin A Series Filter Holder and helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.
A linear polarizer differs from a circular polarizer in that it does not contain an additional quarter wave plane. The addition of a quarter wave plane is to circularly polarize linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, in-camera auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.
This filter is recommended when not using in-camera exposure metering or autofocus. The frame it is mounted in features a serrated edge so that the filter can be easily rotated in order to adjust its effect while placed within a compatible holder.
Compatible with a Kood A Series or Cokin A Series Filter Holder.
Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light.
Clears up haze in distant landscapes and provides more saturated, vivid colors.
Strongest effect when used at a 90° angle from the sun.
Recommended when not using in-camera exposure metering or autofocus.
4x filter factor reduces exposure by 2 stops.
Constructed from optical glass.
Filter frame features a serrated edge so that the filter can be easily rotated and its polarization effect adjusted while placed within a compatible holder.