B + W 49 Circular Polarizer: Picture 1 regular $62.00

About B + W 49 Circular Polarizer

Highly efficient standard 49mm circular polarizing filter for all cameras with beam splitters in the light paths of their TTL exposure meter and with autofocus lenses. Circular polarization has the same pictorial effect as linear polarization, but allows for proper exposure metering and/or autofocus distance settings.

B + W Polarizers increase color saturation and reduce reflections. The neutral gray color and plane parallel polarizer material guarantee optimal image results. High-quality optical glass ensures excellent pictorial quality. The filter factor varies according to how the filter is positioned in relation to the sun. Filter factor is between 2.3 and 2.8.

Linear and circular polarizers both consist of a linear polarizer foil but differ in their construction in the following way. Modern SLR cameras have a beam-splitting prism that sends part of the incoming light to the meter and part to the viewfinder. The effect is that the light entering the meter is partially polarized by the beam-splitter.

A linear polarized placed on the lens of such a system will act as a second polarizer and block light to the meter by a degree dependent on the angle between the prism and the polarizer on the lens. The result is incorrect exposure/aperture values from the meter. The circular polarizer circumvents this problem through the addition of a 1/4-wave retarder, or delay, foil. This ensures that the linearly polarized light is changed into a rotation that appears unpolarized to the meter, resulting in proper exposure/aperture readings.

B + W 49 Circular Polarizer Features

  • Single Coating: Each glass surface is vacuum coated with one layer of Anti-Reflection coating. This single layer helps to prevent internal ghosting and reflections. It also improves light transmission from approximately 92% (uncoated glass) to over 98%

B + W 49 Circular Polarizer Specifications

Filter factor
Between 2.3 and 2.8
Filter Size
49mm
Filter Type
SC Single Coated Glass Filter
Mfr #
65-1065299
SKU
BW49CPLS

B + W 49 Circular Polarizer Reviews Powered by TurnTo®

Reviewed by 2 customers

 
5.0

Great Polarizer

By

How you use the product - at the end of the lens Things that are great about it - it polarizes light Things that aren't so great about it - lose 2 to 2.5 stops of light.

 
5.0

Great for landscape photography

By

Very smooth operation of the ring, made to tight tolerances.

Q&A

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Questions about this item:

Sanford S  Does the B&W 49 MRC Circular-pol filter fit the Leica 50.14 summilux?
Bret B  That depends on the lens size...so as long as the Leica excepts a 49mm filter...it should work very well.
Sanford S  Does the B&W 49 MRC Circular-pol filter fit the Leica 50.14 summilux?
Bret B  That depends on the lens size...so as long as the Leica excepts a 49mm filter...it should work very well.
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