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Sigma Super Wide Angle 20mm f/1.8 (D) EX Aspherical DG DF RF Autofocus Lens for Sony Alpha & Minolta Maxxum Series

B&H # SI2018MAF MFR # 411205 USA
No Longer Available

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This 20mm is a Super wide-angle lens with a large aperture of f/1.8 and angle of view 94.5°. It has Macro focusing capability with a minimum focusing distance of just 7.9", for a reproduction ratio of 1:4. The 9-bladed iris diaphragm obtains beautiful out of focus image characteristics. Aspherical lens elements in the front & rear lens groups minimize distortion, spherical aberration and astigmatisms. The lens has non-vignetting optical construction in order to obtain adequate peripheral brightness with wide apertures-especially desirable for digital cameras. The lens incorporates a rear focus system eliminating front lens rotation. The focusing ring does not rotate during autofocus yet provides adequate focusing torque of the focusing ring during manual focusing of the lens. The lens materials used in this new lens are lead and arsenic free ecological glass.

Performance
Focal Length 20mm
Aperture Maximum: f/1.8
Minimum: f/22
Camera Mount Type Sony Alpha, Minolta AF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
DSLR (APS-C Sensor)
Angle of View 94.5°
Minimum Focus Distance 7.9" (20.07 cm)
Magnification 0.25x
Maximum Reproduction Ratio 1:4
Elements/Groups 13/11
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread 82 mm
Dimensions (DxL) Approx. 3.5 x 3.4" (8.89 x 8.64 cm)
Weight 1.14 lb (520 g)
Sigma Super Wide Angle 20mm f/1.8 (D) EX Aspherical DG DF RF Autofocus Lens for Sony Alpha & Minolta Maxxum Series
  • Front & Rear Caps
  • Lens Hood
  • Case
  • Limited 1-Year North and South America Warranty Against Manufacturing and Workmanship Defects.
  • Limited 3-Year U.S.A. Extended Warranty Extension Against Manufacturing and Workmanship Defects.
  • REVIEW SNAPSHOT®

    by PowerReviews
    Sigma20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens
     
    4.3

    (based on 7 reviews)

    Ratings Distribution

    • 5 Stars

       

      (5)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (1)

    86%

    of respondents would recommend this to a friend.

    Pros

    • Consistent output (5)
    • Easily interchangeable (5)
    • Fast / accurate auto-focus (4)
    • Strong construction (4)

    Cons

    • Heavy (4)

    Best Uses

    • Landscape/scenery (3)
    • Night photography (3)
      • Reviewer Profile:
      • Semi-pro photographer (4)
      • Was this a gift?:
      • No (4)

    Reviewed by 7 customers

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    Displaying reviews 1-7

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    (0 of 6 customers found this review helpful)

     
    1.0

    No estoy conforme con la compra.

    By lorenzo_hugo@hotmail.com

    from Buenoa Aires Argentina

    About Me Semi-pro Photographer

    Verified Buyer

    Pros

      Cons

      • Blurry Focus
      • Poor in Low Light

      Best Uses

        Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

        Compre la lente para usarla en diafragma 1.8 y solo puedo usarla en 4.0 que es donde me salen las fotos nítidas. Si es un tema de compatibilidad tendrían que haberme explicado al momento de la compra ya que tengo una Alfa 33 y una Alfa 65 que se las compre a ustedes y en ambas me hace el mismo defecto. Aguardo respuesta. Saludos.

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        (1 of 2 customers found this review helpful)

         
        5.0

        excellent landscape lens

        By xtranch

        from Crystal Springs, Ms

        About Me Semi-pro Photographer

        See all my reviews

        Verified Reviewer

        Pros

        • Consistent Output
        • Easily Interchangeable
        • Very sharp good color

        Cons

        • Weak Casing

        Best Uses

        • Landscape/Scenery

        Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

        I use this lens for shooting landscapes, on a tripod at f5.6 to 8 usually. This lens is very sharp, good even in the corners. It compares favorably with much more expensive lenses in performance. The construction is not as solid as an L Canon. I have owned both the Sony and Canon mount models

        • Was this a gift?:
        • No

        Share this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Fantastic affordable lens...

        By Janus-van-aanus

        from Tielt-Belgium

        About Me Semi-pro Photographer

        Verified Buyer

        Pros

        • Consistent Output
        • Easily Interchangeable
        • Nice Bokeh

        Cons

        • Heavy

        Best Uses

        • Indoors/Low Light
        • Landscape/Scenery
        • Macro Photography
        • Night Photography
        • Sports/Action

        Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

        I love to work with wide-angle lenses.
        Specialy I like de F/1.8 focus on this lens. This means that you can use a wide-angle and a limited dept-of-field together in one picture...
        And it is verry affordable !

        • Was this a gift?:
        • No

        Share this review

        (3 of 3 customers found this review helpful)

         
        5.0

        Good One

        By LTVpro

        from Boiling Springs SC

        About Me Semi-pro Photographer

        Verified Reviewer

        Pros

        • Strong Construction

        Cons

          Best Uses

          • Video
          • Weddings/Events

          Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

          Did not work with my Sony a33 camera at first, had to send it to Sigma for update. came back in a week and works great. very nice DOF, using on glidecam and love it.

          • Was this a gift?:
          • No

          Share this review

          (2 of 3 customers found this review helpful)

           
          5.0

          Very nice lens

          By Kenneth

          from Sisimiut

          About Me Photo Enthusiast

          Verified Reviewer

          Pros

          • Consistent Output
          • Easily Interchangeable
          • Strong Construction

          Cons

          • Heavy
          • Slow Focus

          Best Uses

          • Indoors/Low Light
          • Landscape/Scenery
          • Night Photography

          Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

          This lens work very nice, I use it for photograhpy in nature and at night, but it is also very usefull indoor. The autofocus is a little slow and the lens a little hevy, but it do not affect the handling.

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          (1 of 2 customers found this review helpful)

           
          5.0

          Exellent product!

          By Deb the photog

          from Kansas

          About Me Hobbyist/Enthusiast

          Verified Buyer

          Pros

          • Consistent Output
          • Easily Interchangeable
          • Quick Focus
          • Rugged
          • Sharp Focus
          • Strong Construction

          Cons

          • Heavy

          Best Uses

          • Landscape Photography
          • Upgrade

          Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

          Excellent lens for wide angle pictures! I use it on a Sony Alpha 900. Takes great pictures and is easy to attach and remove.

          Share this review

          (8 of 9 customers found this review helpful)

           
          4.0

          Sharp and fast

          By Lawrence

          from Capital Region

          About Me Professional

          Verified Buyer

          Pros

          • Consistent Output
          • Durable
          • Easily Interchangeable
          • Quick Focus
          • Sharp Focus
          • Strong Construction

          Cons

          • Heavy

          Best Uses

          • General Use
          • Landscape Photography
          • Night Photography
          • Sports/Action
          • Upgrade

          Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:

          The Sigma 20mm f1.8 is very good lens that captures bright and clear images under low light. The price point is a plus. My first usage of this lens came when I was hired to shoot a portrait of a very camera shy artist in their studio. I literally had the opportunity to shoot 5 photos and only under available light. There was no chance to set up a strobe or or other lighting. Even so I was amazed at the clarity and the nuance the lens allowed me to capture. I was very proud of the images and 3 of the 5 photos were published.

          Share this review

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