Schneider 68-019905 - 138 mm Round Drop-In Filters Linear True-Pol - Unmounted

180546

Neuf

138 mm Round Drop-In Filters Linear True-Pol - Unmounted

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301,28 CHF


 

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180546
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The Schneider 138mm Unmounted True-Pol 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 non-coated and delivers approximately 33% average light transmission. Constructed from Water White optical glass, it is 138mm in diameter and 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.



- Recommended when not using in-camera exposure metering or autofocus.



- Non-coated.



- Approximately 33% average light transmission.



- 2.97x filter factor reduces exposure by 1.57 stops.



- Constructed from Water White optical glass.



- Filter Pouch for storage and transport.







Specifications







Filter Type



Linear Polarizer



Filter Factor



2.97 (1.57 Stop)



Shape



Circle



Circular Size



138 mm



Front Accessory Thread / Bayonet



Unthreaded



Filter Material



Glass



Coatings



None



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