NiSi Cinema 4×5.65” Linear Polariser Filter for rent in Saint-Petersburg
- Filter Type Linear Polarizer
- Filter Factor 2x (1-Stop) to 2.8x (1.5-Stop)
- Rectangular Size 4 x 5.65" / 101.6 x 143.5 mm
- Coatings None ...
- Filter Type Linear Polarizer
- Filter Factor 2x (1-Stop) to 2.8x (1.5-Stop)
- Rectangular Size 4 x 5.65" / 101.6 x 143.5 mm
- Coatings None
- Filter Thickness 0.2" / 5 mm
- Filter Material Glass
-
6 hours
420 i
half shift
-
1 shift
600 i
shift
-
3 shift
1620 i
540 i / shift
-
14 shift
6720 i
480 i / shift
-
30 shift
12600 i
420 i / shift
Enter a value between 1 and 60
Filter
- Filter type
- Polarizer LIN
- Size
- 4×5.65”
Physical
- Width
- 101.3 mm
- Length
- 143.5 mm
The NiSi 4 x 5.65" Linear 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 linear polarizer differs from a circular polarizer in that it does not contain an additional quarter wave plane. The addition of a quarter wave plane is to circularly polarize 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, in-camera 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 recommended when not using in-camera exposure metering or autofocus. It is made using a process that involves laminating a layer of polarizing film between 2 pieces of optical glass. The glass layers are then ground flat to maintain image sharpness.
