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Cokin Cokin 40.5mm Circular Polarizer Filter (Black or Silver)

Cokin 40.5mm Circular Polarizer Filter (Black or Silver)

Cokin 40.5mm Circular Polarizer Filter (Black or Silver)

B&H # COCP40.5S MFR # CC164D405
Cokin Cokin 40.5mm Circular Polarizer Filter (Black or Silver)

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Ship Time: 2-4 weeks 

Product Highlights

  • Circular Polarizer Filter
  • 2 to 4x Filter Factor, +1 to 2 Stops
  • Helps to Eliminate Reflections and Glare
  • Reduces Haze in Landscapes
  • Greater Color and Tonal Saturation
  • Optical Glass
  • Aluminum-Alloy Filter Ring
  • 40.5mm Front Filter Threads
  • Plastic Case
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You Pay: $43.28

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Overview
  • 1Description

The Cokin 40.5mm Circular Polarizer Filter 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 circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the 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, 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 constructed from optical glass and features a black, or silver-colored, aluminum-alloy filter ring for durability while remaining lightweight.

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.
Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features.
2 to 4x filter factor reduces exposure by 1 to 2 stops.
Constructed from optical glass and a black, or silver-colored, aluminum-alloy filter ring.
Plastic filter case for storage and transport.
UPC: 085831562446
In the Box
Cokin 40.5mm Circular Polarizer Filter (Black or Silver)
  • Plastic Filter Case
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
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    Specifications
    Type Circular Polarizer
    Size 40.5 mm
    Filter Factor 2 to 4 (1 to 2 stops)
    Effect Eliminates reflections and haze and improves color and tonal saturation
    Construction Optical glass
    Front Filter Thread Size 40.5 mm
    Front Lens Cap Size 40.5 mm
    Packaging Info
    Package Weight 0.05 lb
    Box Dimensions (LxWxH) 4.095 x 3.071 x 0.63"

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