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Sigma Super Wide Angle 20mm f/1.8 EX Aspherical DG DF RF Autofocus Lens for Nikon AF-D USA

You Pay: $549.00

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.

Note! AF not supported by D40 and D60 cameras.

Performance
Focal Length 20mm
Aperture Maximum: f/1.8
Minimum: f/22
Camera Mount Type Nikon F
Format Compatibility Nikon FX/35mm Film
Nikon DX
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 Nikon AF-D
  • 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
     
    3.8

    (based on 16 reviews)

    Ratings Distribution

    • 5 Stars

       

      (8)

    • 4 Stars

       

      (3)

    • 3 Stars

       

      (2)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (3)

    80%

    of respondents would recommend this to a friend.

    Pros

    • Consistent output (8)
    • Strong construction (8)
    • Durable (6)
    • Fast / accurate auto-focus (6)
    • Nice bokeh (5)

    Cons

    • Blurry focus (4)
    • Heavy (4)

    Best Uses

    • Night photography (7)
    • Low light (5)
    • General purpose (3)
    • Landscape/scenery (3)
    • Weddings (3)
      • Reviewer Profile:
      • Professional (3), Pro photographer (3), Semi-pro photographer (3)
      • Was this a gift?:
      • No (8)

    Most Liked Positive Review

     

    Top Shelf Quality

    I found the Sigma 20mm f1.8 lens to be excellent with one caveat. This lens looks, feels and performs like the best of any photo equipment I've used. I bought it for my...Read complete review

    I found the Sigma 20mm f1.8 lens to be excellent with one caveat. This lens looks, feels and performs like the best of any photo equipment I've used. I bought it for my D80 to use in low light where my Nikon AF-S 18-135 DX f3.5-5.6 lens wasn't fast enough. The Sigma did exactly what I wanted and gave me 2 stops faster shutter speed and a quality, undistorted image.Sharpness: When focused properly, this lens is sharp; even wide open.Focus: Autofocus is extremely fast. This lens doesn't have a motor built into it like the 18-135 so I was worried, based on other reviews, that it would be slow and noisy. Not to worry. The old Nikon screw drive AF system works just fine. With this Sigma, and the Nikon AF 50mm 1.8 D lens I also bought, AF is just as fast as my Nikon AF-S lens and any difference in sound level between my AF-S lens and the 2 lenses I have that rely on the camera body AF motor is insignificant. I've had no "hunting" problems with any of my lenses including this one.But; there's that one "caveat" I mentioned. At f1.8 with this lens, my D80 would always focus a little "forward". For example; if I was shooting at a subject at 10 feet the depth of field would be at say, 8 to 9.5 feet. If shooting at 50 yards the depth of field would be at say, 35 to 45 yards. Consistently, the subject would be a little out of focus. At about 2 to 5 feet distance from the subject, the subject would be sharp but still on the back edge of the depth of field. I should note that I was using the lens without any filters to make sure they weren't the source of the problem. This was very frustrating because I like this lens and there is no other lens choice if you want a 20mm f1.8 lens in a Nikon mount.I "fixed" this problem by buying a D300 which allows me to fine tune the autofocus for up to 12 different lenses and selling my D80. On the D300 this lens is excellent and meets or exceeds my every expectation. In the D300 autofocus fine tune menu I had to dial in "+10" for the Sigma 20mm f1.8 lens. I didn't want to send the lens back for a "hit or miss" exchange or send it to Sigma for a "calibration" because truth is, I don't think it would've done any good because the DOF is so shallow at f1.8 I don't see how Sigma could come up with a calibration that would provide the "dead on" results I insist on. Shooting in ambient light, sometimes very low ambient light without flash is important to me so I felt the best long term solution was to just get a camera with the AF trim. I'm very happy with that decision based on the perfect performance I'm now getting. It was a sure thing solution, plus I picked up another stop of shutter speed as the D300 always looks great at ISO 1600 but the D80 is very inconsistant at the same ISO.The manual focus "system" on the Sigma 20mm f1.8 has received criticism which I find to be unwarranted in my opinion. First, when looking through the camera viewfinder with a really wide angle lens in low light you can't see anything that is going to help you manually focus anyway. You're going to use this lens in autofocus. But, if for some reason you want to manual focus you have to disengage the camera body autofocus motor with the AF switch on the camera body (like you would with any other non AF-S lens) and then on the Sigma lens slide the focus ring from the forward "AF" position to the rear "M" position to engage the focus ring with the internal mechanics of the lens. That's it.With the manual focus ring in the "AF" autofocus position, it is disengaged and will rotate freely and do nothing. During autofocus it will not move. This is an improvement over the Nikon 50mm f1.8 (and presumably other non AF-S Nikon lenses) because on that lens the manual focus ring is always engaged and rotates when the camera autofocuses and if you try to turn the manual focus ring with the camera AF switch in an autofocus position it may cause damage.Some people have complained about the size and weight of this lens. Again, I disagree. The Sigma is a little larger in diameter than my Nikon AF-S 18-135 zoom lens but the camera/lens assembly has about the same weight and feel with either lens. Weight, as I found out, is not necessarily a bad thing. When I shoot with my Nikon AF 50mm f1.8 D lens I have to be extra careful to be steady because that lens is so short and so light.I was concerned before I bought the Sigma about how my Nikon camera was going to react to having a non Nikon lens. You know, Nikon secrets and such. Looking through the EXIF data the Sigma is listed as a "D" type lens and the other EXIF data is correct. I haven't noticed any exposure issues with the Sigma lens.In summery, on my D300 this Sigma lens is perfect in every regard. On my D80, for whatever reason, the consistent forward shift of the autofocus made the Sigma 20mm f1.8 unacceptable for my purposes because I demand perfect autofocus performance to justify a [$] lens.

    VS

    Most Liked Negative Review

     

    Don't Like The Sigma 20mm f/1.8

    I have used everything from 35mm up to 8x10 view cameras. Shot weddings for 25+ years. Have approx 40 years experience behind a camera.

    Thought I would get a fast,...Read complete review

    I have used everything from 35mm up to 8x10 view cameras. Shot weddings for 25+ years. Have approx 40 years experience behind a camera.

    Thought I would get a fast, wide prime for good image quality shooting low light / available light shots.

    Don't like this lens. Images are soft at best. First lens was horrible; second lens is barely acceptable. It's big and heavy. Don't care for the focusing ring which rotates as the lens focuses. Worst purchase I have ever made.

    I would not / could not recommend this lens to anyone.

    Reviewed by 16 customers

    Sort by

    Displaying reviews 1-16

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    (0 of 2 customers found this review helpful)

     
    4.0

    Images come out soft while set at 1.8f

    By Cole Johnston

    from Brighton MI

    About Me Photography Student

    Verified Buyer

    Pros

    • Consistent Output
    • Durable
    • Nice Bokeh

    Cons

    • Blurry Focus
    • Slow Focus

    Best Uses

    • Indoors/Low Light
    • Night Photography

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

    I use this lens for portraits, it is great for that.
    having the lens set at 1.8f is very difficult to make the image sharp. Very nice Bokeh.
    sometimes has slow focusing.
    all in all it is a nice lens and extremely durable.

    • Was this a gift?:
    • No

    Share this review

     
    4.0

    Decent lens at a decent price

    By Michael Solomon

    from Los Angeles, CA

    About Me Semi-pro Photographer

    See all my reviews

    Verified Buyer

    Pros

    • IQ
    • Nice Bokeh
    • speed
    • Strong Construction

    Cons

    • Heavy
    • Weird noise

    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:

    Works great for video work on my Sony FS-100. Love the FoV it gives. Only "complaints" with this lens is that it's a little heavy and when on manual focus the focusing ring makes a noise that almost makes you think it's broken. I looked into this and apparently it's normal. Your sound guy won't pick it up, but it just sounds wrong haha. But otherwise, superb lens. Great IQ! Very very fast for a 20mm

    • Was this a gift?:
    • No

    Share this review

    (3 of 3 customers found this review helpful)

     
    3.0

    Better than the reviews

    By MSR

    from Australia

    About Me Pro Photographer

    Verified Buyer

    Pros

    • Manual Iris ring
    • No barrel movement
    • Well built

    Cons

    • Focus movement in MF mode

    Best Uses

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

      I bought this lens, amongst other Sigma primes, for use on a Panasonic AF 102 4/3rds camera.
      The product reviews I had read about this lens complained of softness, aboration, and vignetting at the edges, but all the testing reports were performed with a full frame stills camera, and I thought the 4/3rds sensor may not experience the same faults. So I took a chance and got this lens as a test.
      My initial impressions were of a well built lens (for the price class), and solid optic performance with the 4/3rds sensor.
      Keeping as much spill light off the front element with a matte box and blanks is a must. Flares can be attractive, and bokeh (as much as it is a personal preference) is OK.
      I don't use AF at all when I shoot with this camera, so I can't pass comment on how the AF works.
      This particular lens has a MF mode that has focus end stops, unusual for a lot of photographic lens's nowadays, useful for when using a follow focus, but the mechanical movement is not exactly smooth. Sliding the focus barrel forward into AF mode (like a PMW EX1/3 lens) results in a much smoother movement, but no barrel end stops. I can use the lock off nut on the Red Rock Micro .8 (size C) follow focus ring as a proxy end stop.
      This lens (like the Sigma 30mm f1.4, 50mm 1.4, and 85mm 1.4) retains the internal focus movement which means the front of the barrel does not rotate nor move for and aft when focusing. Great for when used with a matte box.
      I purchased this lens (and the others) with the Nikon mount and Novoflex 4/3rds adapter (B&H # NOANMFT).
      Overall I am very pleased with this lens and would recommend it for use on the AF 102.

      • Was this a gift?:
      • No

      Share this review

      (5 of 5 customers found this review helpful)

       
      5.0

      Great wide angle

      By SB

      from Uunited States

      About Me Pro Photographer

      Verified Buyer

      Pros

      • Consistent Output
      • Fast / accurate auto-focus
      • Nice Bokeh

      Cons

        Best Uses

        • Indoors/Low Light
        • Weddings/Events

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

        I had been wanting a sharp wide angle lens that was also fast and I found it. I love this for low light situations where my 2.8 lens would not have cut it. It's very sharp and has little distortion. I don't use wide angle often enough to justify Nikon's price, so this is a great alternative. Happy with my purchase.

        • Was this a gift?:
        • No

        Share this review

        (0 of 25 customers found this review helpful)

         
        1.0

        worst super wide lens

        By Chief

        from nyc

        About Me Pro Photographer

        Verified Buyer

        Pros

          Cons

          • Blurry Focus
          • Heavy
          • Tough To Attach

          Best Uses

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

            This lens did not work on nikon D7000.

            • Was this a gift?:
            • No

            Share this review

            (5 of 11 customers found this review helpful)

             
            1.0

            A big disappointment

            By Briarcliff Baron

            from Jacksonville FL

            About Me Photo Enthusiast

            Verified Reviewer

            Pros

              Cons

              • Blurry Focus
              • Poor in Low Light

              Best Uses

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

                What attracted me to this lens was the low-light possibilities, plus I needed a wide-angle anyway. Mixed reviews on the lens gave me hesitation, but a photographer-friend who shoots with a D700 raved about Sigma lenses, so I ordered the Sigma 20mm 1.8. It proved, over 5 testing opportunities, to be a great disappointment, and I have exchanged it. These remarks: for low-light, absolutely useless. At F1.8, focus wasn't just "soft" , it was flat-out embarassing, with images that could not be salvaged. I took the lens with me to 3 outdoor opportunities, and one more well-lit indoor opportunity. Bottom line: my Nikon kit lens 17-55mm provides much superior sharpness to this lens. Matters not if you're at F16 or F22, this lens simply did not provide the sharpness. ( Had no problems with distortion, but it was lack-of-sharpness, pure and simple, across the spectrum of F-stop choices ) .

                • Was this a gift?:
                • No

                Share this review

                (1 of 1 customers found this review helpful)

                 
                3.0

                It makes the job

                By An Amateur Photographer

                from Itapevi, SP - Brazil

                About Me Photo Enthusiast

                Verified Reviewer

                Pros

                • Durable
                • Lightweight
                • Rugged
                • Strong Construction

                Cons

                • Chromatic aberration
                • Not sharp for close focus

                Best Uses

                • Landscape/Scenery
                • Macro Photography
                • Night Photography

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

                I bought this lens for a couple of very specific applications: to get landscape pictures at night without star trails and for some dramatic close-ups. It makes these well, but not spectacular.

                The image is sharp even wide open (at last from my sample) when the lens is focussed at infinitum - strangely it is not so sharp when focussed close at f/2.8 or more even when using manual focus.

                You will get some CA when using it at f/2.8 and above. Not a surprise for such wide lens.

                It is constructed as a battle tank. Despite it is big, it is also light weight.

                • Was this a gift?:
                • No

                Share this review

                (1 of 2 customers found this review helpful)

                 
                5.0

                Received a good copy!

                By D

                from Maryland

                About Me Semi-pro Photographer

                Verified Buyer

                Pros

                • Consistent Output
                • Lightweight
                • Nice Bokeh
                • Strong Construction

                Cons

                  Best Uses

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

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

                  I have heard of QC issues with regards to Sigma's lenses, though I have been fortunate enough not to encounter any thus far. Wide open, images are sharp in the center; edge sharpness as well as overall sharpness increases when stopped down, as it should.

                  The construction of the lens is very good. Both lens and hood feel durable.

                  Autofocus speed is average.

                  • Was this a gift?:
                  • No

                  Share this review

                  (2 of 2 customers found this review helpful)

                   
                  5.0

                  Great for wedding details

                  By Bill from VA

                  from King George, VA

                  About Me Semi-pro Photographer

                  Pros

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

                  Cons

                    Best Uses

                    • Indoors/Low Light
                    • Weddings/Events

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

                    i love this lens for general detail pictures for weddings, whether it be a bouquet or a church. the 1.8 makes for some really awesome and creative natural light pictures.

                    Share this review

                    (1 of 2 customers found this review helpful)

                     
                    4.0

                    Sweet Lens

                    By Robert P.

                    from Chicago, IL

                    About Me Professional

                    Verified Buyer

                    Pros

                    • Consistent Output
                    • Durable
                    • Easily Interchangeable
                    • Rugged
                    • Strong Construction

                    Cons

                    • Heavy

                    Best Uses

                    • General Use
                    • Landscape Photography

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

                    A nice solid lens for the money. A bit soft at certain apertures, but becomes crisp and sharp after 2.8 and above. Certainly, there isn't much to complain about. It's great for portraits, landscapes and live events. The large filter size is a bit of a problem. They can be very expensive or hard to find at 82mm.

                    Share this review

                    (3 of 4 customers found this review helpful)

                     
                    5.0

                    Sharp and Fast

                    By GW

                    from San Juan, Puerto Rico

                    About Me Professional

                    Verified Buyer

                    Pros

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

                    Cons

                      Best Uses

                      • Night Photography

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

                      Very sharp, very fast. I don't know why people have been complaining about the noise or weight. I carry a wide range of equipment and this is no more or less than anything else. As far as the noise, I can tell you I don't hear a thing but the band and the party when I shoot. This is a fast sharp lens. A great addition to any pro wedding photographer.

                      Share this review

                      (18 of 24 customers found this review helpful)

                       
                      5.0

                      Top Shelf Quality

                      By George

                      from Carol Stream, IL

                      About Me Hobbyist/Enthusiast

                      Verified Reviewer

                      Pros

                      • Consistent Output
                      • Quick Focus

                      Cons

                      • See comments

                      Best Uses

                      • Night Photography
                      • Sports/Action

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

                      I found the Sigma 20mm f1.8 lens to be excellent with one caveat. This lens looks, feels and performs like the best of any photo equipment I've used. I bought it for my D80 to use in low light where my Nikon AF-S 18-135 DX f3.5-5.6 lens wasn't fast enough. The Sigma did exactly what I wanted and gave me 2 stops faster shutter speed and a quality, undistorted image.Sharpness: When focused properly, this lens is sharp; even wide open.Focus: Autofocus is extremely fast. This lens doesn't have a motor built into it like the 18-135 so I was worried, based on other reviews, that it would be slow and noisy. Not to worry. The old Nikon screw drive AF system works just fine. With this Sigma, and the Nikon AF 50mm 1.8 D lens I also bought, AF is just as fast as my Nikon AF-S lens and any difference in sound level between my AF-S lens and the 2 lenses I have that rely on the camera body AF motor is insignificant. I've had no "hunting" problems with any of my lenses including this one.But; there's that one "caveat" I mentioned. At f1.8 with this lens, my D80 would always focus a little "forward". For example; if I was shooting at a subject at 10 feet the depth of field would be at say, 8 to 9.5 feet. If shooting at 50 yards the depth of field would be at say, 35 to 45 yards. Consistently, the subject would be a little out of focus. At about 2 to 5 feet distance from the subject, the subject would be sharp but still on the back edge of the depth of field. I should note that I was using the lens without any filters to make sure they weren't the source of the problem. This was very frustrating because I like this lens and there is no other lens choice if you want a 20mm f1.8 lens in a Nikon mount.I "fixed" this problem by buying a D300 which allows me to fine tune the autofocus for up to 12 different lenses and selling my D80. On the D300 this lens is excellent and meets or exceeds my every expectation. In the D300 autofocus fine tune menu I had to dial in "+10" for the Sigma 20mm f1.8 lens. I didn't want to send the lens back for a "hit or miss" exchange or send it to Sigma for a "calibration" because truth is, I don't think it would've done any good because the DOF is so shallow at f1.8 I don't see how Sigma could come up with a calibration that would provide the "dead on" results I insist on. Shooting in ambient light, sometimes very low ambient light without flash is important to me so I felt the best long term solution was to just get a camera with the AF trim. I'm very happy with that decision based on the perfect performance I'm now getting. It was a sure thing solution, plus I picked up another stop of shutter speed as the D300 always looks great at ISO 1600 but the D80 is very inconsistant at the same ISO.The manual focus "system" on the Sigma 20mm f1.8 has received criticism which I find to be unwarranted in my opinion. First, when looking through the camera viewfinder with a really wide angle lens in low light you can't see anything that is going to help you manually focus anyway. You're going to use this lens in autofocus. But, if for some reason you want to manual focus you have to disengage the camera body autofocus motor with the AF switch on the camera body (like you would with any other non AF-S lens) and then on the Sigma lens slide the focus ring from the forward "AF" position to the rear "M" position to engage the focus ring with the internal mechanics of the lens. That's it.With the manual focus ring in the "AF" autofocus position, it is disengaged and will rotate freely and do nothing. During autofocus it will not move. This is an improvement over the Nikon 50mm f1.8 (and presumably other non AF-S Nikon lenses) because on that lens the manual focus ring is always engaged and rotates when the camera autofocuses and if you try to turn the manual focus ring with the camera AF switch in an autofocus position it may cause damage.Some people have complained about the size and weight of this lens. Again, I disagree. The Sigma is a little larger in diameter than my Nikon AF-S 18-135 zoom lens but the camera/lens assembly has about the same weight and feel with either lens. Weight, as I found out, is not necessarily a bad thing. When I shoot with my Nikon AF 50mm f1.8 D lens I have to be extra careful to be steady because that lens is so short and so light.I was concerned before I bought the Sigma about how my Nikon camera was going to react to having a non Nikon lens. You know, Nikon secrets and such. Looking through the EXIF data the Sigma is listed as a "D" type lens and the other EXIF data is correct. I haven't noticed any exposure issues with the Sigma lens.In summery, on my D300 this Sigma lens is perfect in every regard. On my D80, for whatever reason, the consistent forward shift of the autofocus made the Sigma 20mm f1.8 unacceptable for my purposes because I demand perfect autofocus performance to justify a [$] lens.

                      Share this review

                      (7 of 7 customers found this review helpful)

                       
                      5.0

                      well-worth the money!

                      By DHNE (Die-Hard Nikon Enthusiast)

                      from America!

                      About Me Professional

                      Pros

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

                      Cons

                        Best Uses

                        • General Use
                        • Landcape
                        • Night Photography
                        • Wildlife

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

                        Construction quality: excellent!
                        Image quality: SHARP in the center at apertures around f/4 - f/8, but blurry at edges. However, very good and SHARP across the entire field-of view at f/16 !!! But for wide-angle landscape photography, isn't extreme depth of field what we want? Sure it is! So at f/16, this is a very good lens!

                        Share this review

                        (3 of 4 customers found this review helpful)

                         
                        5.0

                        sharp and wide

                        By DaniLew

                        from Virginia

                        About Me Hobbyist/Enthusiast

                        Verified Buyer

                        Pros

                        • Consistent Output
                        • Durable
                        • Rugged
                        • Sharp Focus
                        • Strong Construction

                        Cons

                          Best Uses

                          • General Use
                          • Night Photography
                          • Special Effects

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

                          I'm a natural/available light photographer, so I need quality fast glass for times when I need to go wide, like at a party or club - the Sigma 20 1.8 delivers.

                          Share this review

                          (18 of 27 customers found this review helpful)

                           
                          1.0

                          Don't Like The Sigma 20mm f/1.8

                          By deeshooter

                          from milwaukee, wi

                          Verified Reviewer

                          Pros

                            Cons

                            • Blurry Focus
                            • Heavy

                            Best Uses

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

                              I have used everything from 35mm up to 8x10 view cameras. Shot weddings for 25+ years. Have approx 40 years experience behind a camera.

                              Thought I would get a fast, wide prime for good image quality shooting low light / available light shots.

                              Don't like this lens. Images are soft at best. First lens was horrible; second lens is barely acceptable. It's big and heavy. Don't care for the focusing ring which rotates as the lens focuses. Worst purchase I have ever made.

                              I would not / could not recommend this lens to anyone.

                              Share this review

                              (13 of 14 customers found this review helpful)

                               
                              5.0

                              A VERY WISE CHOICE!

                              By Anonymous

                              from Wichita, KS

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

                              As I am so IMPRESSED with Nikon's 50mm f/1.8D which I use asmy DAILY lens, that I wanted to get another PRIME non-zoomlens and stay with PRIME lenses for their SUPERIOR imagequality! Then as I found that Sigma's 20mm WIDE-ANGLElens was the same price as their 17-50mm zoom, I KNEW thatthis was the lens that I wanted! Well, after spending 2 full weeks with this lens, and ~50amazing pictures of which I wish I could post some samplesof, all I can say is that this lens lives up to all of myexpectations, and EXCEEDS the picture quality of anywide-angle zoom that I have ever had. I find no color smearing in my night photos, which I findvery hard to believe! Nor do I see the typical,multiple-echoed reflections that I've always been plaguedwith in zoom lenses. This is a very nicely made WIDE-ANGLE lens that takesAMAZING pictures.

                              Expertise: 35+ years with SLR cameras advanced enthusiast

                              Problems Encountered: None, really. Please note that I am only comparing thislens to WIDE-ANGLE ZOOMS at their equal and WIDEST widths,and manually matching f/stop values for a fair comparison.My lens is still NEW and focuses rather slowly.As with my Nikon lenses, the MORE you use them, the FASTERand QUIETER they focus. Of the lenses that I have bought over the years, they areall VERY STIFF when new, but once they are broke-in, they[seem-to] auto-focus a lot FASTER.

                              Previous Equivalent Item Owned: Numerous different wide-angle zoom lenses

                              Items I Recommend: HOYA 82mm Ultraviolet UV(0) Haze Multi-Coated Glass Filter B+H # HOUVMC82

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                              Hoya -  82mm UV Haze NXT HMC Filter
                              • You Pay: $68.90
                               

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                              Flex Lens Shade -  Flex Lens Shade
                              • You Pay: $39.95
                               

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                              Pearstone -  Onyx 50 Lens Case
                              • You Pay: $16.95
                               
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