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

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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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Cokin CC164D405 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.
In the Box
Cokin 40.5mm Circular Polarizer Filter (Black or Silver)
  • Plastic Filter Case
  • Limited 1 Year Warranty
  • Table of Contents
    • 1Description

    Cokin CC164D405 Specs

    Filter Type Circular Polarizer
    Filter Factor 2 - 4 (1 - 2 Stop)
    Shape Circle
    Circular Size 40.5 mm
    Front Accessory Thread / Bayonet 40.5 mm
    Filter Material Glass
    Packaging Info
    Package Weight 0.05 lb
    Box Dimensions (LxWxH) 4.095 x 3.071 x 0.63"

    Cokin CC164D405 Reviews

    40.5mm Circular Polarizer Filter (Black or Silver) is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from Neat little filter An odd size, but as usual B&H had it anyway. Well built frame with easy rotation.
    Date published: 2012-02-22
    • y_2019, m_4, d_17, h_15
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    question

    Will this work on a Sony a6000 ??? Sometimes these Circular types will not work on particular Digital Cameras !!! Thank You !!!
    Asked by: Robert K.
    This filter will work with any lens that has a 40.5mm diameter. Circular polarizers are compatible with digital cameras, however linear polarizers are not.
    Answered by: Heather S.
    Date published: 2018-08-27
    • y_2019, m_4, d_17, h_15CST
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    Cokin CC164D405 Q&A

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