B+W 49mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter

BH #BWKCPXSPH49 • MFR #66-1081470
B+W
B+W 49mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter
Key Features
  • Circular Polarizer Filter
  • 99.5% Transmission, Kaesemann Foils
  • 2 to 2.8x Filter Factor, +1 to 1.5 Stops
  • Helps to Eliminate Reflections and Glare
The B+W 49mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano 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.
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$72.95
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B+W XS-Pro Overview

The B+W 49mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano 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 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.

To prevent internal ghosting and reflections, each glass surface includes multiple layers of anti-reflection coating. This Multi-Resistant Coating (MRC) also offers further protection to the filter substrate and helps it to stay clean for longer than with uncoated filters. The Nano coating associated with XS-Pro filters provides an additional eighth layer over the MRC, resulting in an improved beading effect when in contact with water for greater cleaning efficiency.

B+W filters are constructed from Schott glass for increased optical clarity and color fidelity. This filter features a thin brass rotating filter ring to minimize the potential for vignetting while enhancing durability and jamming prevention. To further reduce the possibility of vignetting when this filter is in use, the filter ring's outside diameter is slightly larger than the actual thread size. This may prevent the use of some lens manufacturer bayonet hoods.

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.

B+W XS-Pro Specs

Filter TypeCircular Polarizer
Filter Factor2x (1-Stop) to 2.8x (1.5-Stop)
Circular Size49 mm Filter Thread
RotatingYes
Front Accessory Thread / Bayonet49 mm
CoatingsMulti-Coating
Physical FeaturesStandard
Filter MaterialGlass
Ring MaterialBrass
KnurlingTop
Packaging Info
Package Weight0.095 lb
Box Dimensions (LxWxH)2.65 x 2.65 x 0.8"
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YOUR RECENTLY VIEWED ITEMS

Can this be used to weather seal my x100v?

Can this be used to weather seal my x100v?
Asked by: Gladys
I'm sorry, no. It will certainly prevent dust and moisture from getting on the front element of the lens.
Answered by: Rob
Date published: 2020-03-20

Will it work on Pentax HD 35mm f2 lens? Thanks

Will it work on Pentax HD 35mm f2 lens? Thanks
Asked by: Vikas
Yes it will fit on Pentax 35mm f2
Answered by: vilson
Date published: 2021-01-21

Will this work with the Leica Q2?

Will this work with the Leica Q2?
Asked by: Glen C
Yes - with the lens hood removed as there is not enough clearance to turn the filter with the hood on (you may have thin fingers and manage it though!). Not a major problem, as the hood has to removed to fit the filter in any case.
Answered by: Neil
Date published: 2021-05-29

Will this fit my fujifilm x 100f?

Will this fit my fujifilm x 100f?
Asked by: Brian
Yes with FUJIFILM AR-X100 Adapter Ring (Silver) BH #FUARX100S
Answered by: vilson
Date published: 2021-01-14

question

Will this filter work well with the fixed lens on the Sony Rx1Rll?
Asked by: Bob
Absolutely. I use it all the time on my RXR1r. It's about 1-1.5 factor as opposed to 1.5-2 stops of a traditional polarizer. It's a tad warmer than others, which does not bother me in my landscapes. The extra brightness of the High Trans doesn't seem like a lot, but it definitely helps, especially in low light situaions where you need a polar.
Answered by: Alan J.
Date published: 2019-03-03

question

Is this the slim CPL version from other brands?
Asked by: Alvin
yes works with my 24mm
Answered by: Philip B.
Date published: 2018-08-26
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