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B+W 49mm Circular Polarizer Slim Filter

B&H # BWCPS49 Mfr # 65-016573
No Longer Available
Product Highlights
  • Helps to Eliminate Reflections and Glare
  • Reduces Haze and Blue Cast in Landscapes
  • Greater Color and Tonal Saturation
  • Slim-Line Mount for Wide Angle Lenses
  • Lightweight Aluminum Filter Ring
  • High Quality Schott Glass

The B+W 49mm Circular Polarizer Slim 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.

B+W filters are constructed from high quality Schott glass for increased optical clarity and color fidelity. The slim filters are specifically designed for use with wide angle lenses and are only 0.2" / 5mm thick. They do not have front threads for stacking additional filters.

Note: This filter ring's outside diameter is slightly larger than the actual thread size, and because of this you may be unable to attach the lens manufacturer's bayonet-mounted lens hood to the lens while using this filter. This is dependent on your specific lens and how thick the front rim of the lens is; with thinner, low-profile lenses usually being affected more.

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° 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.
Constructed from high quality Schott glass for optical clarity.
Lightweight, slim aluminum filter ring measures 5mm thick to help reduce vignetting.
Type Circular polarizer
Size 49 mm
Filter Factor About 2.5 (1.3 stops)
Rotating Yes
Effect Eliminates reflections and haze and improves color and tonal saturation
Construction Schott glass
Front Lens Cap Size 49 mm
B+W 49mm Circular Polarizer Slim Filter
  • Slip-On Cap
  • 10-Year Limited Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    B+W49mm Circular Polarizer Slim Filter
     
    4.4

    (based on 8 reviews)

    Ratings Distribution

    • 5 Stars

       

      (4)

    • 4 Stars

       

      (3)

    • 3 Stars

       

      (1)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Consistent effect (6)
    • Easily mounted (6)
    • Clear optics (5)
    • Firm mount (5)
    • Strong construction (5)

    Cons

      Best Uses

      • Image manipulation (7)
      • Color correction (4)
      • Artwork (3)
        • Reviewer Profile:
        • Photo enthusiast (5)
        • Was this a gift?:
        • No (8)

      Reviewed by 8 customers

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      Displaying reviews 1-8

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      5.0

      I love this filter

      By Omer

      from Pakistan

      About Me Photography Student

      See all my reviews

      Verified Buyer

      Pros

      • Clear Optics
      • Consistent Effect
      • Firm Mount
      • Strong Construction

      Cons

        Best Uses

        • Color Correction
        • Image Manipulation
        • Landscape Photography

        Comments about B+W 49mm Circular Polarizer Slim Filter:

        Excellent CP filter. I didn't detect any flare or vignetting in the photographs. It is slim so its hard to attach but once attached it works perfectly.

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        I would buy this product again and again

        By chepko

        from Russia, Moscow

        About Me Casual Photographer

        Verified Buyer

        Pros

        • Clear Optics
        • Consistent Effect
        • Easily Mounted
        • Firm Mount
        • Strong Construction

        Cons

          Best Uses

          • Artwork
          • Image Manipulation
          • Lens Protection

          Comments about B+W 49mm Circular Polarizer Slim Filter:

          exellent quality, easy to use

          • Was this a gift?:
          • No

          Share this review

          (1 of 1 customers found this review helpful)

           
          4.0

          Excellent Quality

          By Rick aroundtown

          from Columbia,SC

          About Me Photo Enthusiast

          Verified Buyer

          Pros

          • Easily Mounted
          • Strong Construction

          Cons

            Best Uses

            • Image Manipulation

            Comments about B+W 49mm Circular Polarizer Slim Filter:

            Great for blue skies and eliminating reflections.
            Because it's slim, slightly hard to manipulate the front ring.

            • Was this a gift?:
            • No
            • Similar:
            • Nikon slim polarizer

            Share this review

             
            5.0

            For me, it's the best product.

            By Gilmar

            from Saint-Eustache - Québec

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Consistent Effect
            • Easily Mounted
            • Strong Construction

            Cons

              Best Uses

              • Artwork
              • Color Correction
              • Image Manipulation

              Comments about B+W 49mm Circular Polarizer Slim Filter:

              It's a great quality product at the better price.

              • Was this a gift?:
              • No

              Share this review

               
              5.0

              Amazing Glass

              By Red in California

              from Los Angeles, CA

              About Me Photo Enthusiast

              Verified Buyer

              Pros

              • Clear Optics
              • Consistent Effect
              • Easily Mounted
              • Firm Mount
              • Strong Construction

              Cons

                Best Uses

                • Artwork
                • Image Manipulation
                • UV Protection

                Comments about B+W 49mm Circular Polarizer Slim Filter:

                I love this filter. Its very thin and made with great german glass. The price is not extremely high either. Can't go wrong with B and W.

                • Was this a gift?:
                • No

                Share this review

                 
                4.0

                It performed as expected.

                By Lou

                from Elkhart, Indiana

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                • Clear Optics
                • Consistent Effect
                • Easily Mounted
                • Firm Mount

                Cons

                  Best Uses

                  • Color Correction
                  • Image Manipulation

                  Comments about B+W 49mm Circular Polarizer Slim Filter:

                  It was easy to mount and use and it performed as expected.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  4.0

                  It performed as expected

                  By Lou

                  from Elkhart, Indiana

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

                  • Clear Optics
                  • Consistent Effect
                  • Easily Mounted
                  • Firm Mount

                  Cons

                    Best Uses

                    • Color Correction
                    • Image Manipulation

                    Comments about B+W 49mm Circular Polarizer Slim Filter:

                    It was easy to mount and it performed as expected.

                    • Was this a gift?:
                    • No

                    Share this review

                    (3 of 5 customers found this review helpful)

                     
                    3.0

                    good polarizer but

                    By ronin

                    from san antonio, texas

                    About Me Semi-pro Photographer

                    Verified Buyer

                    Pros

                      Cons

                        Best Uses

                          Comments about B+W 49mm Circular Polarizer Slim Filter:

                          for most of lenses i own require thread for hood and enough space to place a cap. this filter does not provide extra space or thread so i could not make a use of it.

                          • Was this a gift?:
                          • No

                          Share this review

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