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Hoya 37mm HRT Circular-Polarizer Filter

29€


Κωδικός Προϊόντος: 10934

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he Hoya 37mm HRT Circular-Polarizer UV Filter is designed to block ultraviolet light and reduce the bluish cast of daylight while also helping to eliminate 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 filter with polarizing capability 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.

Filter Type Circular Polarizer
Filter Factor 1.5 - 3 (0.6 - 1.6 Stop)
Shape Circle
Circular Size 37 mm
Front Accessory Thread / Bayonet 37 mm
Filter Material Glass
Coatings None
 
   
   
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