B+W 40.5mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter

B+W 40.5mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter

B+W 40.5mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter

B&H # BWKCPXSPH40 MFR # 66-1082656
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Product Highlights

  • 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
  • Reduces Haze in Landscapes
  • Greater Color and Tonal Saturation
  • MRC Multi-Resistant Coating
  • Nano Coating
  • Thin Brass Filter Ring
  • 40.5mm Front Filter Threads
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B+W XS-Pro overview

  • 1Description

The B+W 40.5mm 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 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.
In the Box
B+W 40.5mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter
  • Filter Case
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    B+W XS-Pro specs

    Filter Type Circular Polarizer
    Filter Factor 2 - 2.8 (1 - 1.5 Stop)
    Shape Circle
    Circular Size 40.5 mm
    Front Accessory Thread / Bayonet 40.5 mm
    Filter Material Glass
    Coatings Multi-Coating
    Packaging Infodyyyccrsxasyaacrvv
    Package Weight 0.054 lb
    Box Dimensions (LxWxH) 2.6 x 2.6 x 0.6"

    B+W XS-Pro reviews

    40.5mm XS-Pro Kaesemann High Transmission Circular Polarizer MRC-Nano Filter is rated 4.5 out of 5 by 4.
    Rated 5 out of 5 by from Delivers Exactly What It Says am a novice photographer who wanted a polarizing filter and saw this listed. other reviews were favorable and i can see why. very well made and it really delivers the quality that i expected for the price, which is higher than i wanted to pay, but i also wanted something that i wouldn't regret buying. i'm glad i got it.
    Date published: 2015-10-11
    Rated 4 out of 5 by from filter works well I bought this filter as it was advertised as being a high light transmission filter, which can be very useful when light is low. So far, I haven't noticed a radical increase in shutter speed over a conventional filter but it costs about the same as the other filters I have purchased but the quality is good so why not?
    Date published: 2017-01-22
    Rated 5 out of 5 by from Fantastic Lens I fly offshore frequently for work and I usually take my Sony Alpha 6000 to get some shots. They're great, except for the reflections from the Plexiglas windows. This lens fixes that problem, so now I can take great photos! Wish I knew about this earlier!
    Date published: 2016-07-07
    Rated 4 out of 5 by from Circular Polarizer Filter Used on 16-50 lens and it works great. Good quality and does not deduce much light. I dont notice any image quality change after it is applied. Con...very expensive.
    Date published: 2016-02-07
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