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Schneider 4 x 4" One-Stop Square Circular Polarizer Filter

BH #SCOSCP44 • MFR #68-015144
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Schneider 4 x 4" One-Stop Square Circular Polarizer Filter
Key Features
  • Unmounted Circular Polarizer Filter
  • For Third-Party or Custom Holders
  • 2x Filter Factor, +1 Stop
  • Helps to Eliminate Reflections and Glare
The 4 x 4" One-Stop Square Circular Polarizer Filter from Schneider helps 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.
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Schneider One Stop CPL Overview

The 4 x 4" One-Stop Square Circular Polarizer Filter from Schneider helps 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 non-coated and delivers approximately 38% average light transmission. Constructed from Water White optical glass, this 4 x 4" filter is unmounted for use in third-party or custom filter holders.

Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
Unmounted for use in third-party or custom filter holders for film and television cameras.
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.
Constructed from Water White optical glass.
Non-coated.
Approximately 38% average light transmission.
2x filter factor reduces exposure by 1 stop.
Filter Pouch for storage and transport.
UPC: 605228110922

Schneider One Stop CPL Specs

Filter Type
Circular Polarizer
Exposure Reduction
1-Stop
Size
4 x 4" / 101.6 x 101.6 mm 
Front Accessory Thread / Bayonet
No
Coating
No
Filter Material
Glass
Packaging Info
Package Weight
0.36 lb
Box Dimensions (LxWxH)
6 x 5.55 x 1.2"

Schneider One Stop CPL Reviews

See any errors on this page?

Will this work with the Wooden Camera Zip Box Pro ...

Will this work with the Wooden Camera Zip Box Pro 4.5in Round Filter Stage?
Asked by: Stepan
Hi, the Wooden Camera Zip Box Pro 4.5in Round Filter Stage is only compatible with mounted filters, so this filter will not work with that item.
Answered by: Boyd H
Date published: 2023-10-26

Will this work with the Wooden Camera Zip Box ...

Will this work with the Wooden Camera Zip Box Rota Tray?
Asked by: Everett
It is not. This will not be compatible.
Answered by: Joe P
Date published: 2020-07-21

Does this filter work with the Schneider 114mm ...

Does this filter work with the Schneider 114mm SSLR to 4.5" Adapter Ring?
Asked by: David
Yes it does. This filter will attach with that Schneider 114mm adapter ring.
Answered by: Stephen M
Date published: 2020-07-03

Would this filter work with the Arri MMB 2 ...

Would this filter work with the Arri MMB 2 circular tray?
Asked by: Frederick
Yes, the Schneider 4.5" One-Stop Circular Unmounted Polarizer Filter is compatible with the Arri MMB 2 circular tray.
Answered by: Jonathan S
Date published: 2024-04-01

Will this work with the Wooden Camera Zip Box Pro ...

Will this work with the Wooden Camera Zip Box Pro 4.5in Round Filter Stage?
Asked by: Stepan
Hi, this filter is compatible with the Wooden Camera Zip Box Pro 4.5in Round Filter Stage.
Answered by: Boyd H
Date published: 2020-04-02
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