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Sigma Super Wide Angle 20mm f/1.8 EX Aspherical DG DF RF Autofocus Lens for Canon EOS USA

B&H # SI2018CAF Mfr # 411101
In Stock
Free Expedited Shipping
You Pay: $569.00

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 Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
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 EX Aspherical DG DF RF Autofocus Lens for Canon EOS
  • 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
    SigmaSuper W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens
     
    4.4

    (based on 48 reviews)

    Ratings Distribution

    • 5 Stars

       

      (26)

    • 4 Stars

       

      (17)

    • 3 Stars

       

      (2)

    • 2 Stars

       

      (2)

    • 1 Stars

       

      (1)

    93%

    of respondents would recommend this to a friend.

    Pros

    • Strong construction (30)
    • Durable (26)
    • Consistent output (22)
    • Easily interchangeable (21)
    • Fast / accurate auto-focus (19)

    Cons

    • Slow focus (9)
    • Heavy (6)
    • Blurry focus (4)

    Best Uses

    • Low light (26)
    • Night photography (24)
    • Landscape/scenery (23)
    • Video (22)
    • Weddings (17)
      • Reviewer Profile:
      • Pro photographer (15), Semi-pro photographer (9), Photo enthusiast (8), Enthusiast (4), Casual photographer (3)
      • Was this a gift?:
      • No (26), Yes (3)

    Most Liked Positive Review

     

    Great Lens for AstroPhotography

    As a landscape Photographer I did not own a lens that was faster than F4 and for AstroPhotography I needed to have a faster lens 2.8 or below for my Canon 5DmkII.
    After...Read complete review

    As a landscape Photographer I did not own a lens that was faster than F4 and for AstroPhotography I needed to have a faster lens 2.8 or below for my Canon 5DmkII.
    After reviewing both the Canon and Sigma and "cost", I bought the 20mm 1.8 and have been very happy with the both the timelapse and still images.
    It's amazing the difference that a 1.8 makes when recording the stars in the Arizona desert.

    VS

    Most Liked Negative Review

     

    Embarrassingly soft for MY intended use

    I purchased this lens to shoot stars due to its speed and wide angle and ignored most reviews thinking that people were just being picky and over critical, after all, these were just the...Read complete review

    I purchased this lens to shoot stars due to its speed and wide angle and ignored most reviews thinking that people were just being picky and over critical, after all, these were just the specs I needed! Alas, I was terribly disappointed by this Sigma lens. Wide open this lens is useless for night shooting as the stars, even in shorter exposures blur and flare in a halo anywhere outside of the very center. This may be a good effect for some portrait shooting but not for MY purpose. Thanks B&H for your "stellar" return policy, even though I could have avoided this by actually believing some of the former reviews!

    Reviewed by 48 customers

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    Displaying reviews 1-20

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    (1 of 1 customers found this review helpful)

     
    5.0

    Quality lens at a great price

    By TJ

    from Nova, Ohio

    About Me Photo Enthusiast

    Verified Buyer

    Pros

    • Durable
    • Easily Interchangeable
    • Fast / accurate auto-focus
    • Lightweight
    • Strong Construction

    Cons

      Best Uses

      • Landscape/Scenery
      • Night Photography

      Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

      Use is mainly for astrophotography, fast 1.8 lens, the 20mm provides a good field of view. Well constructed
      works great.

      • Was this a gift?:
      • No

      Share this review

      (1 of 1 customers found this review helpful)

       
      4.0

      It does the job

      By David

      from Sweden

      About Me Photo Enthusiast

      Pros

      • Colors And Contrast
      • F18
      • Large aperture
      • Sharp
      • Strong Construction

      Cons

      • Blurry Focus
      • Not so sharp wide open
      • Slow Focus
      • Soft wide open
      • Vignetting

      Best Uses

      • Indoors/Low Light
      • Landscape/Scenery
      • Night Photography
      • Video
      • Weddings/Events

      Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

      This is one of does Sigma lenses that some love and some hate. I personally think it's good but not perfect. It does produce decent images at it's widest aperture but when you stop it down the image quality improves.If you're in to astrophotography like I am and you don't mind all the massive coma in the frame (at F/1.8) then you should have a look into this lens.

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      great lens

      By Kieffer

      from New York

      About Me Pro Photographer

      Verified Buyer

      Pros

      • Consistent Output
      • Durable
      • Easily Interchangeable
      • Fast / accurate auto-focus

      Cons

      • Heavy

      Best Uses

      • Indoors/Low Light
      • Landscape/Scenery
      • Video
      • Weddings/Events

      Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

      superb! just like a canon! I use it for video only and it's great! just don't shake!

      • Was this a gift?:
      • No

      Share this review

      (1 of 1 customers found this review helpful)

       
      5.0

      FANTASTIC LENS

      By Guilherme Borges

      from Brazil

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Great for Video
      • Strong Construction
      • Very good in low light

      Cons

        Best Uses

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

        Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

        I'd been looking to buy this lens for a couple of years and finally got around to it. I work with video and I needed a fast, wide lens so I could film in poorly lit places and on the streets at night. This lens is fantastic and one of the smartest purchases I ever made.
        But it goes a little further than I imagined: it also works great for macro (both photo and video).

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        awesome company

        By billy d

        from virginia beach, va

        About Me Semi-pro Photographer

        Verified Buyer

        Pros

        • Easily Interchangeable
        • Rugged

        Cons

          Best Uses

          • Video

          Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

          bought the wrong lens on my sons advice. b&h
          was great they returned the original lens then set me up w/a tech who helped get the right lens. couldn't be happier.

          • Was this a gift?:
          • Yes

          Share this review

          (0 of 1 customers found this review helpful)

           
          5.0

          awesome product

          By billy d

          from virginia beach, va

          About Me Semi-pro Photographer

          Verified Buyer

          Pros

          • Easily Interchangeable
          • Lightweight
          • Strong Construction

          Cons

            Best Uses

            • Video

            Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

            great lens, great shipping, great customer service

            • Was this a gift?:
            • Yes

            Share this review

            (2 of 2 customers found this review helpful)

             
            3.0

            Solid, with a few drawbacks

            By Tim

            from Philadelphia

            About Me Pro Photographer

            Verified Buyer

            Pros

            • Fast / accurate auto-focus
            • Strong Construction

            Cons

            • Blurry Focus
            • Slow Focus

            Best Uses

              Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

              Build quality is pretty good. Perfect focal length for crop sensors. Like everyone says, really soft at f1.8, tolerable for video but probably not for professional photography.

              • Was this a gift?:
              • No

              Share this review

              (3 of 3 customers found this review helpful)

               
              2.0

              Sharp Lens But Slow Focus

              By OmarPhoto

              from Los Angeles, Ca.

              About Me Pro Photographer

              Verified Buyer

              Pros

              • Nice Bokeh
              • Strong Construction
              • Very Sharp

              Cons

              • Poor in Low Light
              • Slow Focus

              Best Uses

              • Landscape/Scenery

              Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

              I purchased this lens to shoot with it at live music events in dark venues with stage lighting and in very fast-paced environments, unfortunately this lens didn't work out so well for me because in those very demanding situations it's auto focus performance left much to be desired as it often struggled to achieve focus. I will not say that it's focusing is useless, it's just not as fast and accurate as my Canon EF 28mm f1.8 under the same circumstances with the same camera. Also, it doesn't have an Ultrasonic focusing mechanism or equivalent so it's focusing is slow and noisy. Furthermore, it's color saturation is not quite up to par either, I'd say I get about 10-15% less color saturation than with my EF 28mm f1.8. I don't think that his is a terrible lens though, it is actually a very sharp lens (from f2.8 on up), with very solid metal construction - it does not have feel or weight of a cheap plastic lens, it's just that my particular needs for it were very demanding and it didn't meet them so I had to return it. But if you'll usually be shooting in daylight situations and/or not in fast-paced environments, or you'll be manually focusing then this lens is very good for the money because of it's very generous f1.8 aperture, very solid construction, and mostly because it's just a very sharp lens when not shot wide open.

              • Was this a gift?:
              • No

              Share this review

              (14 of 19 customers found this review helpful)

               
              2.0

              Embarrassingly soft for MY intended use

              By Shoebum

              from Central Washington

              About Me Photo Enthusiast

              Verified Buyer

              Pros

                Cons

                • Soft not in a good way

                Best Uses

                • Weddings/Events

                Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                I purchased this lens to shoot stars due to its speed and wide angle and ignored most reviews thinking that people were just being picky and over critical, after all, these were just the specs I needed! Alas, I was terribly disappointed by this Sigma lens. Wide open this lens is useless for night shooting as the stars, even in shorter exposures blur and flare in a halo anywhere outside of the very center. This may be a good effect for some portrait shooting but not for MY purpose. Thanks B&H for your "stellar" return policy, even though I could have avoided this by actually believing some of the former reviews!

                • Was this a gift?:
                • No

                Share this review

                (6 of 6 customers found this review helpful)

                 
                5.0

                A Lens against the crop factor

                By LiveViewer

                from Doral CA

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                • Strong Construction

                Cons

                • Blurry Focus

                Best Uses

                • Indoors/Low Light
                • Landscape/Scenery
                • Video

                Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                If you have a canon kiss, T2i, T3i, T4i, 7D or 60D for video You have to buy it. In a 1.6 crop really is a 32mm with a 72° wide angle and f.1.8, you can't found a similar lens in market . I'm planning to use this sigma with the new Black Magic cinema. In 2.2 crop factor i think that is a decent wide angle lens.

                Share this review

                 
                5.0

                A Hidden Gem

                By pratyush360

                from Chandler, AZ

                About Me Semi-pro Photographer

                Verified Buyer

                Pros

                • Consistent Output
                • Lightweight
                • Nice Bokeh
                • Strong Construction

                Cons

                • Slow Focus

                Best Uses

                • Indoors/Low Light
                • Landscape/Scenery
                • Night Photography
                • Video
                • Weddings/Events

                Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                Great lens for candid shots of your family, even under low light. Equally great for environmental portraits, street photography, and of course, landscapes. Has a very good MFD for close up shots.
                Focus is slower and noisier than Canon, but easy to live with.
                This is the fastest full frame lens available at this focal length (UWA)..! It gets you the shots that no other lens can.
                - All this for a reasonable price..!

                I absolutely LOVE this lens.

                • Was this a gift?:
                • No

                Share this review

                (6 of 7 customers found this review helpful)

                 
                5.0

                Great low light wide

                By Cam the cameraman

                from Grande Prairie AB Canada

                About Me Semi-pro Photographer

                Pros

                • Nice Bokeh
                • Strong Construction

                Cons

                  Best Uses

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

                  Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                  I was shooting real estate videos with a borrowed Canon 16-35 F2.8 II on a 5D II and found it to be soft, especially at 2.8 and 18mm. Not great. So the lens hunt was on since I had this great client on the line. I thought a prime would be better/sharper but needed something around 18-20 that could shoot 2.8 or less. That's when I read the review on the Canon 20mm non L lens. It was not great sounding either. So then I found the Sigma 20mm and read it wasn't great below F2.8 but that it was clear at that value. Key point CLEAR at F2.8. So I bought it and I use this lens for real estate and it exceeds the 16-35 at the wide low light level. I use this lens more than any other as it's like a macro you can get so close to objects creating addictive fun images as well as great landscape photos day or night! Awesome lens! It's loud focusing but I tell people it's because it's tough, must have planetary gears in it like a bed truck. Hence the 10 year warranty in Canada. They get lost in the 10yr warranty part with big eyes and open mouths. I use it for video and it works awesome for that but not as well as my 50mm F1.2 L of course, however offers similar bokeh for that cinematic look. It's not a portrait lens so it doesn't really compare to the 50. For $ it's a steal. It does compare to the Canon 24 F1.4L and well......It's NOT a Canon 24 F1.4L for sure but it's 1/3 the price and it's wider by a lot! 4mm doesn't seem like a lot but somehow it is. Way wider then my kit lens at 24mm (24-105) and at F1.8 it's stupid fast compared to the 4. It takes brighter landscape pics in total darkness then my Canon 50 F1.2 but not as clear. However under certain circumstances the sigma has the more desired image as one can see more detail and colour, just don't blow it up too much. Given all values the same eg. F2.2 same ISO and Shutter speeds. I recommend this lens as a filler lens between Canon 14 F2.8 and 24 F1.4 although not as sharp as these two it's clearer at F2.8 then any of the Canon F2.8 wide lenses and if you need the exact focal length or close like I did. This lens is a no brainer. Just buy it!

                  • Was this a gift?:
                  • No

                  Share this review

                  (0 of 6 customers found this review helpful)

                   
                  4.0

                  Good Prime

                  By K

                  from Binghamton, NY

                  About Me Pro Photographer

                  Verified Buyer

                  Pros

                  • Durable
                  • Easily Interchangeable
                  • Rugged
                  • Strong Construction

                  Cons

                  • Slow Focus

                  Best Uses

                  • Indoors/Low Light
                  • Macro Photography
                  • Weddings/Events

                  Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                  I use this for weddings.

                  • Was this a gift?:
                  • No

                  Share this review

                  (0 of 4 customers found this review helpful)

                   
                  5.0

                  "Excelent product"

                  By j'aime teie

                  from mexico city

                  Verified Buyer

                  Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                  The greatest lens i could have bought ever!

                  Share this review

                  (10 of 11 customers found this review helpful)

                   
                  4.0

                  Great Lens for AstroPhotography

                  By don in Arizona

                  from Sun City West AZ

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

                  • Consistent Output
                  • Durable
                  • Easily Interchangeable
                  • Fast / accurate auto-focus
                  • Rugged
                  • Strong Construction

                  Cons

                  • 82mm Filter Size

                  Best Uses

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

                  Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                  As a landscape Photographer I did not own a lens that was faster than F4 and for AstroPhotography I needed to have a faster lens 2.8 or below for my Canon 5DmkII.
                  After reviewing both the Canon and Sigma and "cost", I bought the 20mm 1.8 and have been very happy with the both the timelapse and still images.
                  It's amazing the difference that a 1.8 makes when recording the stars in the Arizona desert.

                  • Was this a gift?:
                  • No

                  Share this review

                  (0 of 3 customers found this review helpful)

                   
                  5.0

                  1st prime lens

                  By Blue iris

                  from Whse, yt

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

                  • Durable
                  • Rugged
                  • Strong Construction

                  Cons

                    Best Uses

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

                    Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                    This is my first prime lens and it is awesome. This will remain on my camera for all indoor photos.

                    • Was this a gift?:
                    • No

                    Share this review

                    (1 of 3 customers found this review helpful)

                     
                    4.0

                    Great Low Light Lens

                    By richkuhr

                    from San Francisco, CA

                    About Me Pro Photographer

                    Pros

                    • Cost
                    • Low Light

                    Cons

                    • Blurry Focus

                    Best Uses

                    • Indoors/Low Light
                    • Night Photography
                    • Video

                    Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                    A little soft fully wide open but fine for my video needs on Canon 60D and 7D. The low light ability makes it a great investment in your lens kit if you can afford to add it. I think it's the best deal out there for a low light prime wide.

                    • Was this a gift?:
                    • No

                    Share this review

                    (0 of 1 customers found this review helpful)

                     
                    4.0

                    Solid Wide angle lens

                    By Ben

                    from NYC

                    About Me Pro Photographer

                    Verified Buyer

                    Pros

                    • Durable
                    • Easily Interchangeable
                    • Rugged

                    Cons

                      Best Uses

                      • Indoors/Low Light
                      • Landscape/Scenery
                      • Video

                      Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                      I've used the lens for wide vistas, small airplane interiors, and dolly shots. I'm very happy with the results. It's allowed me to get shots with my 5DMII which I could not accomplish without this lens.

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      4.0

                      Great Wide Lens

                      By Skinny Guy

                      from Albertville, MN

                      Verified Buyer

                      Pros

                      • Durable
                      • Easily Interchangeable
                      • Nice Bokeh
                      • Rugged
                      • Strong Construction

                      Cons

                      • Slight soft focus

                      Best Uses

                      • Indoors/Low Light
                      • Macro Photography
                      • Video
                      • Weddings/Events

                      Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                      I just purchased this lens to use with my Canon 7D for primarily steadicam and dolly work. The wideness of the angle and the low light capabilities make it a very versatile piece of glass. The minimum focusing distacne is also a great plus. Being that I use it for mostly video I did not get a chance to test the speed of the auto focus. The only negative is a slightly soft focus, and little range between foacl points. Other than that, it is well built

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      4.0

                      Great lens for the money

                      By Skinny Guy

                      from Albertville, MN

                      Verified Buyer

                      Pros

                      • Durable
                      • Easily Interchangeable
                      • Nice Bokeh
                      • Rugged
                      • Strong Construction

                      Cons

                        Best Uses

                        • Video
                        • Weddings/Events

                        Comments about Sigma Super W/A 20mm f/1.8 EX Aspherical DG DF RF AF Lens:

                        I use this lens mostly for steadicam and dolly work using a Canon 7D. The lens provides a nice wide angle considering the cropped frame of the 7D. I also like that the lens has a very minimal focusing distance. The lens could be a little more sharp, and could use a little more range between focal lenghts. Having said that, I would definitely recommend this lens due to it's versatility.

                        • Was this a gift?:
                        • No

                        Share this review

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