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Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras

B&H # SI102045DPAF MFR # 201109
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  • Zoom Super Wide Angle

Price: $479.00

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Offer ends: MAR 31 '15

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The Sigma 10-20mm f/4-5.6 EX DC lens offers a super-wide zoom solution to digital cameras, and was exclusively designed to suit the characteristics of digital SLR cameras. The super wide-angle capability of this zoom lens (equivalent range of approx. 15-30mm when used with a Pentax digital SLR camera(*) makes it a very powerful tool for both indoor and landscape photography.

DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is made to match the smaller dimensions used for the image sensor on digital cameras. As a result these lenses are also more compact and lightweight, and are better matched to digital SLR cameras.

Note: (*) Not suitable for 35mm film SLR camera.

EX lens series denotes excellence of engineering and new technology
Correction for various types of aberration provided by three SLD (Special Low Dispersion) glass element and two aspherical lenses
Minimum focusing distance of 9.4" (24 cm) at all focal lengths
The IF (Internal Focusing) design offers smooth and fast autofocus and non-rotating filter attachment
Performance
Focal Length 10 - 20mm
Aperture Maximum: f/4 - 5.6
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 102.4° - 63.8°
Minimum Focus Distance 9.4" (23.88 cm)
Magnification 0.15x
Maximum Reproduction Ratio 1:7
Elements/Groups 13/10
Diaphragm Blades 7
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread 77 mm
Dimensions (DxL) Approx. 3.4 x 3.5" (8.64 x 8.89 cm)
Weight 1.14 lb (520 g)
Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras
  • Front & Rear Lens Cap
  • 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
    Sigma10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras
     
    4.5

    (based on 43 reviews)

    Ratings Distribution

    • 5 Stars

       

      (29)

    • 4 Stars

       

      (11)

    • 3 Stars

       

      (1)

    • 2 Stars

       

      (1)

    • 1 Stars

       

      (1)

    95%

    of respondents would recommend this to a friend.

    Pros

    • Fast / accurate auto-focus (27)
    • Consistent output (25)
    • Easily interchangeable (22)
    • Strong construction (21)
    • Lightweight (18)

    Cons

    • Poor in low light (4)
    • Blurry focus (3)

    Best Uses

    • Landscape/scenery (27)
    • Low light (10)
    • Special effects (8)
    • Weddings (7)
    • Landscape photography (6)
      • Reviewer Profile:
      • Photo enthusiast (21), Semi-pro photographer (7), Enthusiast (5), Semi-professional (5)
      • Was this a gift?:
      • No (25)

    Most Liked Positive Review

     

    acceptable image quality and high value

    Image is not that sharp compared to prime lens like da 15 or very expensive ultra wide lens like da 12-24, but is good enough so as not to annoy you and can...Read complete review

    Image is not that sharp compared to prime lens like da 15 or very expensive ultra wide lens like da 12-24, but is good enough so as not to annoy you and can be used as wallpaper without apparent blur (no blur at all in the center, a little soft at 10mm if you focus your eye to some fine detail at the extreme border). But the value is non-comparable, think about much more FOV compared to da15 and much cheaper compared to da 15 and da 12-24. So if you are tight with budget and would like a ultra wide lens with acceptable image quality, this is the one.

    VS

    Most Liked Negative Review

     

    A disappointment

    After reading many product review, I was really excited about this lens. However, I was disappointed from the very first frame. The lens just would not focus sharply any anything, be it...Read complete review

    After reading many product review, I was really excited about this lens. However, I was disappointed from the very first frame. The lens just would not focus sharply any anything, be it near or far. Maybe just a "bad copy." I don't know. I simply returned it and will decide later if I want to try again. I'd really like an ultra-wide lens for my Pentax K5.

    Reviewed by 43 customers

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    (1 of 1 customers found this review helpful)

     
    5.0

    Much better than expected

    By Sam

    from Bethesda, MD

    About Me Photo Enthusiast

    Verified Buyer

    Pros

    • Easily Interchangeable
    • Strong Construction

    Cons

      Best Uses

      • Landscape/Scenery

      Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

      I've been awaiting an affordable extra-wide lens for my APC format Pentax. I know how hard it is to make a good, low-cost lens that is much wider than 20-30 mm, even with high f.numbers. There are a handful of selections for Pentax DSLRs, and for the most part they are expensive, whether fixed or zoom. That is expected.

      This lens always gets the "It's affordable but not so good." type of reviews. They say, "It's slow, it's full of flare and distortion." But let me say that while it may have some flare in full sun, and I believe I've detected a curved tree at the edge, this lens is just a delight.

      I don't take pictures of checkerboards, and I take most of my wide photos on sunny f.11 days. I really like what I get with this lens: amazing vistas, crisp clear details, and good versatility.

      Unless you know you need the superiority of a lens that costs 3-5 times as much, do yourself a favor and give the Sigma DC J a try.

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      Impressive lens

      By Mark in Minneapolis

      from Minneapolis, MN

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Consistent Output
      • Durable
      • Strong Construction

      Cons

      • Poor in Low Light
      • Slow Focus

      Best Uses

      • Landscape/Scenery

      Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

      I'm really impressed by this lens. I've been shopping around for an ultra-wide zoom, after switching from a Nikon DSLR system to Pentax. The options for Pentax are more limited, but even so this is an excellent choice. I find it a great walk-around landscape lens, and sufficient architectural\interior lens.

      There are some obvious shortcomings; Wide open at 10mm it's a touch soft in the corners, but 12mm and above or stopped down and it's pretty sharp. Due to UWA framing - it's basically a nonissue. It's a bit slow at 4\5.6, decent distortion, occasional focus hunt, but again for the price point it's hard to argue.

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      Great quality, not too heavy.

      By ligonestra

      from St. Paul, MN

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

      • Durable
      • Lightweight
      • Strong Construction

      Cons

      • Poor in Low Light

      Best Uses

      • Indoors/Low Light
      • Landscape/Scenery

      Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

      Perfect for interiors or big landscapes.

      • Was this a gift?:
      • No

      Share this review

      (2 of 2 customers found this review helpful)

       
      5.0

      acceptable image quality and high value

      By Ling

      from AZ

      About Me Photo Enthusiast

      Verified Buyer

      Pros

        Cons

          Best Uses

            Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

            Image is not that sharp compared to prime lens like da 15 or very expensive ultra wide lens like da 12-24, but is good enough so as not to annoy you and can be used as wallpaper without apparent blur (no blur at all in the center, a little soft at 10mm if you focus your eye to some fine detail at the extreme border). But the value is non-comparable, think about much more FOV compared to da15 and much cheaper compared to da 15 and da 12-24. So if you are tight with budget and would like a ultra wide lens with acceptable image quality, this is the one.

            Share this review

             
            4.0

            Great Lens for the Price

            By rcelt

            from Manchester Conn

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Consistent Output

            Cons

              Best Uses

              • Landscape/Scenery

              Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

              Lens appears to be very well made....used for travel and scenic photo...It performs very well at all focal lenghts.

              • Was this a gift?:
              • No

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              5.0

              Excellent budget choice

              By Chuck Norris

              from Zumbrota, MN

              About Me Photo Enthusiast

              Verified Buyer

              Pros

              • Easily Interchangeable
              • Lightweight

              Cons

                Best Uses

                • Sports/Action

                Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                Only a slight loss in contrast wide open. May require some fine-tuning of AF focus point in camera menu.

                • Was this a gift?:
                • No

                Share this review

                (3 of 4 customers found this review helpful)

                 
                4.0

                Good Value Ultrawide

                By Nieb

                from irvine, CA

                About Me Semi-pro Photographer

                Verified Buyer

                Pros

                • Lightweight

                Cons

                  Best Uses

                  • Landscape/Scenery

                  Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                  This lens was lighter and smaller than I expected it to be. The Sigma balances quite well on my Pentax K-5 making it a perfect travel companion. It's a fairly sharp lens, I wouldn't say that it's quite at the level of the 15 f/4, but then, this thing can go really wide. It's major negative is that it vignettes quite heavily, but that be corrected. It's also great that this thing takes 72mm filters, as ultrawides are normally tricky in the filter department.

                  • Was this a gift?:
                  • No

                  Share this review

                  (5 of 5 customers found this review helpful)

                   
                  5.0

                  Totally different perspective

                  By Timid

                  from Cape Town, South Africa

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

                  • Consistent Output

                  Cons

                  • No HSM

                  Best Uses

                  • Landscape/Scenery

                  Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                  Moving from 18mm as my widest focal length, the 10-20 was an amazing experience to play with. Excuse the pun, but its gives a different perspective to photography. I had to learn a different technique (you need the horizon in the middle to prevent converging lines); but once I got to know this lens I was amazed. I need to do very little post processing as it has strong contrast and accurate colouring. I strongly recommend this lens. Flare control is excellent. I can now deliberately include the sun in the photo without destroying the photo.

                  • Was this a gift?:
                  • No

                  Share this review

                  (2 of 2 customers found this review helpful)

                   
                  3.0

                  Bad copy

                  By Groovy

                  from Quebec, Canada

                  About Me Semi-pro Photographer

                  Verified Buyer

                  Pros

                  • Durable
                  • Fast / accurate auto-focus
                  • Lightweight

                  Cons

                  • Blurry Focus
                  • Poor in Low Light

                  Best Uses

                  • Landscape/Scenery
                  • Night Photography

                  Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                  The copy I had was very soft and I had to returned it. B&H was very nice with the exchange, I bought the sigma 8-16 instead and the difference is night and day.

                  • Was this a gift?:
                  • No

                  Share this review

                  (9 of 9 customers found this review helpful)

                   
                  5.0

                  Poor Focus

                  By Magician

                  from Tucson

                  About Me Photo Enthusiast

                  Pros

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

                  Cons

                    Best Uses

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

                    Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                    For those who have commented on poor focuing ability of this lens, I would like to add that I've used it on K20, K-x, K-r and K-5 Pentaxes with no problems. Lens has provided excellent sharpness and color redintion. I've owned it now for about 3 years. I don't know much about firmware influence on focusing, but that's what I would check first. Make sure your S/W is up-to-date. Easy enough to do.

                    • Was this a gift?:
                    • No

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                    (3 of 13 customers found this review helpful)

                     
                    1.0

                    Worst lens i've used!

                    By shaft

                    from Barton,Md.

                    About Me Photo Enthusiast

                    Verified Reviewer

                    Pros

                      Cons

                      • Blurry Focus

                      Best Uses

                        Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                        Would give a big fat 0 if i could.Lens will not focus,in manual focus it must be set at the 3 foot mark to get an in focus photo of what should be ifinity.It is obvious to anyone who is not legally blind that it is focusing past the true infinity point but after sending it to sigma for repair with this info provided to them they adjust the Auto focus to specs and send it back with the same problem.Obviously did not even test it before returning.Sigma says it's Pentax fault for not putting focus adjustment in the software of my camera.Really?I'm out shipping cost to send it back and still without a lens 2 weeks later.I think i bought two Sigma's,the first one and the last one!!!You can't judge the cost of the lens until you find out how many times you'll have to eat the shipping sending it back!!

                        • Was this a gift?:
                        • No

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                        (2 of 2 customers found this review helpful)

                         
                        5.0

                        Beautiful

                        By mightywink

                        from Johnson City, TN

                        About Me Pro Photographer

                        Verified Buyer

                        Pros

                        • Easily Interchangeable
                        • Lightweight
                        • Quality storage case
                        • Strong Construction

                        Cons

                          Best Uses

                          • Indoors/Low Light
                          • Interiors
                          • Real Estate

                          Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                          I'm so happy with this purchase. I'm now able to shoot interiors easily. I was able to capture a tiny half bathroom in its entirety without the "fisheye" effect. This will save me loads of time on the post-production end. I haven't used it enough yet to give it a thorough review, though.

                          • Was this a gift?:
                          • No

                          Share this review

                          (3 of 3 customers found this review helpful)

                           
                          2.0

                          A disappointment

                          By Tom

                          from Carbondale, IL

                          About Me Photo Enthusiast

                          Verified Buyer

                          Pros

                          • Lightweight

                          Cons

                          • Blurry Focus

                          Best Uses

                          • Landscape/Scenery

                          Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                          After reading many product review, I was really excited about this lens. However, I was disappointed from the very first frame. The lens just would not focus sharply any anything, be it near or far. Maybe just a "bad copy." I don't know. I simply returned it and will decide later if I want to try again. I'd really like an ultra-wide lens for my Pentax K5.

                          • Was this a gift?:
                          • No

                          Share this review

                          (3 of 3 customers found this review helpful)

                           
                          5.0

                          Great lens, great bargin

                          By k9lover

                          from San Antonio, Tx

                          About Me Semi-pro Photographer

                          Verified Buyer

                          Pros

                          • Consistent Output
                          • Durable
                          • Easily Interchangeable

                          Cons

                            Best Uses

                            • Landscape/Scenery

                            Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                            I bought this lens to take interior house photos and for landscape photography. I rented a Pentax 12-24mm lens for comparsion and found no difference in image quality. Save yourself a couple of hundred dollars and invest in this lens. It's a great wide angle lens and the sweat spot is F11. I would recommend using a tripod and not use the lens wide open. Distortion and converging lines can occur at the 10mm setting if you're not careful. But this can be corrected with post processing software

                            • Was this a gift?:
                            • No

                            Share this review

                             
                            5.0

                            Great Lens

                            By Pete

                            from Michigan

                            About Me Photo Enthusiast

                            Verified Buyer

                            Pros

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

                            Cons

                              Best Uses

                              • Landscape/Scenery
                              • Weddings/Events

                              Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                              This is an amazing lens. It's opens up a whole new perspective to your photography. After much research I settled on the Sigma and it's been a fantastic addition. Great clarity throughout and it works great with my Pentax Kr.

                              • Was this a gift?:
                              • No

                              Share this review

                              (3 of 3 customers found this review helpful)

                               
                              5.0

                              Great Balance for Price, Build, and IQ

                              By Chris96367

                              from 96367

                              About Me Photo Enthusiast

                              Verified Buyer

                              Pros

                                Cons

                                  Best Uses

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

                                  Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                                  I use this mostly for a different perspective (10mm) and normal shots (20mm). During indoor events this stays on the camera half of the time. You just can't beat how it captures a room or crowd or unique photo. Keep in mind, a flash is needed for 20mm shots in dim light. A kit lens will handle light better on 18-20mm shots. Images are sharp and full of detail right out of the box, no camera adjustments needed. Contrast and other colors are not bad, but less saturated than my other lenses. Instead of changing in camera saturation, I run a profile in Lightroom to give colors a boost. It is screw drive, which is snappy, but not fast enough for candid shots or sports (but this isn't that type of lens anyhow). I can't figure out the minimum focus distance because it will lock focus at different lengths even during one shot. Even so, it will focus around 5-6 inches, which helps create some unique photos at 10mm.

                                  I like the weight (light) and the filter size (77mm) and overall feel of the lens. It is a good balance when on the camera. The lens pouch/container and center squeeze cap is standard Sigma issue and great for storage.

                                  I don't like the quality of the hood and the way it mounts. I do not see it lasting long, but time will tell.

                                  • Was this a gift?:
                                  • No

                                  Share this review

                                   
                                  5.0

                                  I would recomend this product.

                                  By JM

                                  from ontario canada

                                  About Me Photo Enthusiast

                                  Verified Buyer

                                  Pros

                                  • Durable
                                  • Easily Interchangeable
                                  • Fast / accurate auto-focus
                                  • Lightweight
                                  • Rugged

                                  Cons

                                    Best Uses

                                    • Landscape/Scenery
                                    • Weddings/Events

                                    Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                                    Lens lived up to manufacturers claims,plus great price.Totaly satsfied.

                                    • Was this a gift?:
                                    • No

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                                    (3 of 3 customers found this review helpful)

                                     
                                    4.0

                                    ULTRA Wide

                                    By J

                                    from Illinois

                                    About Me Photo Enthusiast

                                    Verified Buyer

                                    Pros

                                    • Fast / accurate auto-focus
                                    • Lightweight
                                    • Strong Construction

                                    Cons

                                    • Size

                                    Best Uses

                                    • Landscape/Scenery
                                    • Unique Perspective

                                    Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                                    Very well constructed, VERY Wide Lens. Focuses quickly as there is very little throw, Huge DOF. Seems quite good optically. I found 20mm wide open quite sharp on my copy. 10mm (why you are considering it) isn't as sharp wide open but is great way to this perspective and improves upon stopping down. Difficult lens to use well photographically as it's so wide, must get really close to subject to avoid it being a dot. Can almost touch subject and still get lots of background. Significantly wider than 16-45, but isn't petite by 15DA Limited comparison.

                                    • Was this a gift?:
                                    • No

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                                    (6 of 6 customers found this review helpful)

                                     
                                    5.0

                                    Excellent Lens

                                    By Vlad

                                    from Portland, ME

                                    About Me Photo Enthusiast

                                    Verified Buyer

                                    Pros

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

                                    Cons

                                      Best Uses

                                      • Indoors/Low Light
                                      • Landscape/Scenery
                                      • Wildlife Photos

                                      Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                                      I have got this lens about three weeks ago for my trip to Las Vegas and Grand Canyon and places around in UT, AZ, NM. This was one of the best photo purchases I have ever made. Lens is very sharp, has excellent contrast, nice color balance and very low distorsions if you are not shooting parallel lines from close distance. It was quite good for shooting city landscapes and close indoors. I am not a pro, but do photography for >25 years. I think this is an excellent lens.

                                      • Was this a gift?:
                                      • No

                                      Share this review

                                       
                                      4.0

                                      Great lens for the price

                                      By Kulu

                                      from Canada

                                      About Me Casual Photographer

                                      Verified Buyer

                                      Pros

                                      • Consistent Output
                                      • Lightweight

                                      Cons

                                        Best Uses

                                        • Indoors/Low Light
                                        • Landscape/Scenery

                                        Comments about Sigma 10-20mm f/4-5.6 EX DC J Autofocus Lens for Pentax Digital SLR Cameras:

                                        Great lens for the money. Focus can be hit and miss near minimum focus distance, but then this lens is almost always used with hyper focal/infinity so really isn't much of an issue.

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                                        • No

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