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. Kaesemann High Transmission Circular (HTC) polarizing filters are fitted with polarizing foils which provide 99.5% light transmission that are cemented between plano-parallel optical glass. The resulting sandwich is then precision-polished to achieve accurate plano-parallel surfaces. Finally, they are edge-sealed to protect the foil against humidity.
Features
- Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
- 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.
- Multi-coated to prevent internal ghosting and reflections while providing over 99.5% light transmission.
- 2 to 2.8x filter factor reduces exposure by 1 to 1.5 stops.
- Constructed from Schott glass for optical clarity.
- Nano coating provides an improved beading effect with water for more efficient cleaning.
- Plastic filter case for storage and transport.
Specifications
- Filter Type: Circular Polarizer
- Filter Factor: 2 - 2.8 (1 - 1.5 Stop)
- Shape: Circle
- Circular Size: 55 mm
- Front Accessory Thread / Bayonet: 55 mm
- Filter Material: Glass
- Coatings: Multi-Coating
- Warranty: 1 year
- Weight: 48 grams
Kit content
B+W XS-Pro Digital HTC CPL MRC nano 55 filter
User guide
Filter box
Lens cleaning cloth
Packaging Info
- Package Weight 0.125 lb / 57 grams
- Box Dimensions (LxWxH) 3.75 x 3.7 x 0.85"