Canon 77mm Circular Polarizing Filter

BH #CACP77Q • MFR #2191B001
Canon 77mm Circular Polarizing Filter
Key Features
  • Minimizes Reflections and Glare
  • Reduces Haze and Blue Cast in Landscapes
  • Enhances Color and Tonal Saturation
  • Optical Glass, Aluminum Ring
Useful for minimizing reflections and glare and enhancing the overall color and tonal saturation is the 77mm Circular Polarizing Filter from Canon. By filtering out light that has become polarized due to reflection from a non-metallic surface, this filter helps to produce a noticeable increase in saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A circular polarizer differs from a linear polarizer in that it supports full use of a camera's autofocus and auto-exposure functions.
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Canon 2191B001 Overview

Useful for minimizing reflections and glare and enhancing the overall color and tonal saturation is the 77mm Circular Polarizing Filter from Canon. By filtering out light that has become polarized due to reflection from a non-metallic surface, this filter helps to produce a noticeable increase in saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A circular polarizer differs from a linear polarizer in that it supports full use of a camera's autofocus and auto-exposure functions.

Reduces reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
Arrange and filter directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light.
Lessens haze in distant landscapes and provides more saturated, vivid colors.
Strongest effect when used at a 90° angle from the sun.
Optical glass is used in order to maintain clear image quality with high contrast and color fidelity.
UPC: 013803081497

Canon 2191B001 Specs

Filter TypeCircular Polarizer
Circular Size77 mm Filter Thread
RotatingYes
Filter MaterialGlass
Ring MaterialAluminum
Packaging Info
Package Weight0.2 lb
Box Dimensions (LxWxH)5.25 x 3.85 x 0.85"
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How many stops of exposure does this reduce?

How many stops of exposure does this reduce?
Asked by: Tyler
This will reduce 1 1/4 to 1 1/2 stops of light
Answered by: vilson
Date published: 2021-01-18

question

will this filter work with the canon 6d with a 24-105L lens?
Asked by: Anonymous
Yes it will. It is 100% compatible.
Answered by: Matthew C.
Date published: 2018-08-27

question

In the Canon lens manual, it has a caution to use Canon Circular Polarizing Filter if a polarizing filter is needed. Is there a technical reason to use a Canon product? Or would any high quality polarizing filter be just as effective?
Asked by: Anonymous
You can use pretty much any brand of filter. This one is very good,B+W 77mm Kaesemann XS-Pro Circular Polarizer MRC Nano FilterB&H # BWKCPXSP77 Mfr # 66-1066400http://bhpho.to/1ke87X9
Answered by: Robert K.
Date published: 2020-01-19

Does it have the front threads? If it doesn't, it ...

Does it have the front threads? If it doesn't, it cannot be used with Sensei 77mm Filter Stack Caps. They are very useful.
Asked by: Piotr
This filter does have front threads
Answered by: vilson
Date published: 2021-01-21
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