NiSi 4 x 5.65" Rotating Circular Polarizer Filter has been discontinued, here are some related products you might like:
NiSi 4 x 5.65" Rotating Circular Polarizer Filter
Features
- Mounted Circular Polariser Filter
- For ARRI R2-Compatible Matte Boxes
- Rotatable, Optical Glass
- Nano Coating
- 6mm-Thick, Aluminium-Alloy Filter Tray
Description
This NiSi 4 x 5.65" Rotating Circular Polariser Filter helps to reduce reflections and glare by filtering out light that has become polarised due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarised due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarising filter arranges, and filters, this directionally polarised 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 polariser only differs from a linear polariser in that it contains a quarter wave plane in addition to the linear polarising filter. The addition of this quarter wave plane is to circularly polarise the linearly polarised light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polariser, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarised, it permits the use of these functions.
Constructed from optical glass, this filter is mounted within a 6mm-thick, 4 x 5.65" aluminium-alloy filter tray for use in matte boxes that can accommodate ARRI R2 filter rings. In order to adjust the intensity of the polarisation effect, an external dial on the filter tray allows for the independent rotation of the circular polariser. Each glass surface includes one layer of nano coating which results in an improved beading effect when in contact with water or oil for greater cleaning efficiency.
Features
- Compatible with matte boxes that can accommodate ARRI R2 filter rings.
- Helps to reduce reflections and glare by filtering out light that has become polarised due to reflection from a non-metallic surface.
- Polarising filters arrange, and filter, directionally polarised 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 colours.
- Strongest effect when used at a 90° angle from the sun.
- 2 to 2.8x filter factor reduces exposure by +1 to 1.5 stops.
- Constructed from optical glass for clarity and mounted within an aluminium-alloy, 6mm-thick, 4 x 5.65" filter tray.
- Each glass surface includes one layer of nano coating that results in an improved beading effect when in contact with water or oil for greater cleaning efficiency.
- External dial on filter tray allows for the rotation of the polariser filter to adjust the intensity of the polarisation effect.
- Padded pouch included for storage and transport.
Specifications
Filter Type | Circular Polariser |
Filter Factor | 2 - 2.8 (1 - 1.5 Stop) |
Shape | Rectangle |
Rotating | Yes |
Rectangular Size | 4 x 5.65" / 101.6 x 143.5 mm |
Filter Thickness | 0.24" / 6 mm |
Filter Material | Glass |
Coatings | Single-Coating |
In The Box
- Filter Pouch
- Limited 1-Year Warranty
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Details
- Product: NiSi 4 x 5.65" Rotating Circular Polarizer Filter
- Manufacturer: NiSi
- Model: NIC-4565-CPL
- SKU: NIC-4565-CPL
- RM Product #: 60300