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Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens

B&H # SI1812535OSP Mfr # 853109
No Longer Available
Product Highlights
  • For Pentax DSLRS
  • Compact Construction
  • Close Focusing Capability
  • Superb Image Quality
  • HSM (Hyper Sonic Motor)
  • Inner Focusing System
  • Ideal for Close-Ups

The compact Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens is a high zoom ratio lens with SLD (Special Low Dispersion) glass, a molded glass aspherical lens and two hybrid aspherical lenses provide correction for aberrations. The super multi-layer coating reduces flare and ghosting. This lens has a minimum focusing distance of 13.8" at all focal lengths, and has maximum magnification of 1:3.8, making it ideal for close-up photography. This lens incorporates a HSM (Hyper Sonic Motor), which ensures a quiet and high-speed autofocus. It is the ideal lens for several type of photography such as wide-angle, telephoto and close-up.

Note!
Vignetting will occur if the lens is used with 35mm SLR cameras or digital cameras with image sensors larger than APS-C size.

Performance
Focal Length 18 - 125mm
Aperture Maximum: f/3.8 - 5.6
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 69.3° - 11.4°
Minimum Focus Distance 1.15' (35 cm)
Magnification 0.26x
Maximum Reproduction Ratio 1:4
Elements/Groups 16/12
Diaphragm Blades 7
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread 67 mm
Dimensions (DxL) Approx. 2.9 x 3.5" (7.37 x 8.89 cm)
Weight 1.11 lb (505 g)
Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens
  • Front & Rear Lens Caps
  • 3-Year USA Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Sigma18-125mm f/3.8-5.6 DC HSM Zoom Lens
     
    4.7

    (based on 9 reviews)

    Ratings Distribution

    • 5 Stars

       

      (6)

    • 4 Stars

       

      (3)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Fast / accurate auto-focus (7)
    • Strong construction (6)
    • Durable (5)
    • Easily interchangeable (5)
    • Lightweight (4)

    Cons

      Best Uses

      • Landscape/scenery (8)
      • Low light (6)
      • Sports/action (4)
      • Weddings (4)
      • Wildlife photos (3)
        • Reviewer Profile:
        • Casual photographer (4), Photo enthusiast (4)
        • Was this a gift?:
        • No (7)

      Reviewed by 9 customers

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      Displaying reviews 1-9

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      4.0

      Looks to be well built

      By Red

      from St. Charles, Mi.

      About Me Semi-pro Photographer

      Verified Buyer

      Pros

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

      Cons

        Best Uses

        • Indoors/Low Light
        • Weddings/Events

        Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

        Some family & portrait photography. Also works very good for doing scenic stuff at waterfalls (long exposures etc. It would be nice if the 3.8 was through out the whole zoom range

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        Great Lens

        By Steve B

        from Wharton, NJ

        About Me Casual Photographer

        Verified Buyer

        Pros

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

        Cons

          Best Uses

          • Indoors/Low Light
          • Landscape/Scenery
          • Sports/Action

          Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

          I use this lens for all photos from vacation to daily shooting of landscapes. It's great because it gives a nice range to shoot on with providing close ups and distance.

          I have nothing to say negative about the lens.

          • Was this a gift?:
          • No

          Share this review

          (0 of 2 customers found this review helpful)

           
          5.0

          18-125mm f/3.8-5.6 DC OS HSM Zoom Lens

          By Derek

          from Australia

          About Me Photo Enthusiast

          Verified Buyer

          Pros

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

          Cons

            Best Uses

            • Landscape/Scenery
            • Weddings/Events
            • Wildlife Photos

            Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

            I am a hobby type person that enjoys landscape ,wildlife and birding.

            • Was this a gift?:
            • No

            Share this review

            (0 of 2 customers found this review helpful)

             
            5.0

            Best offer for Pentax

            By PeterG

            from Israel

            About Me Casual Photographer

            Verified Buyer

            Pros

            • Easily Interchangeable
            • Strong Construction

            Cons

              Best Uses

              • Indoors/Low Light
              • Landscape/Scenery
              • Sports/Action

              Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

              I have made a lot of research work about lenses for Pentax before coming to this one . I am using this lens permanently and I am thinking this is a best solution for casual photographer as I am

              • Was this a gift?:
              • No

              Share this review

               
              5.0

              I would buy this product again

              By MilosJ

              from Prague,Czech Rep.

              About Me Casual Photographer

              Verified Buyer

              Pros

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

              Cons

              • Heavy

              Best Uses

              • Indoors/Low Light
              • Landscape/Scenery
              • Macro Photography
              • Night Photography
              • Sports/Action
              • Video
              • Weddings/Events
              • Wildlife Photos

              Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

              I wanted to buy Pentax Lens 18-135mm, but was out of stock because the problem in Japan, I was recommended from BH to buy SIGMA, which is little bit more heavy but I am happy with, nice pictures, good work with, OK

              • Was this a gift?:
              • No

              Share this review

              (2 of 2 customers found this review helpful)

               
              5.0

              Great for insect specimen pictures

              By bugmugger

              from marion ia

              About Me Photo Enthusiast

              Verified Buyer

              Pros

              • Fast / accurate auto-focus
              • Strong Construction

              Cons

                Best Uses

                • Indoors/Low Light
                • Landscape/Scenery

                Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

                I bought the lens to photograph moth and beetle specimens in my collection. The lens meets my requirements and is bright and focuses close enough to take pictures of insects in the 20 to 125 mm range. I was using two different lens before. The quality of the pictures is exceptional.

                • Was this a gift?:
                • No

                Share this review

                (2 of 2 customers found this review helpful)

                 
                4.0

                Good walk around lens

                By TW

                from NE Ohio

                About Me Photo Enthusiast

                Verified Reviewer

                Pros

                • Consistent Output
                • Durable
                • Fast / accurate auto-focus
                • HSM
                • Lightweight

                Cons

                • Zoom ring turn direction

                Best Uses

                • Casual walk around
                • Landscape/Scenery

                Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

                While I have a good collection faster zooms, I always wanted to have a walk around lens that I don't need to swap lens. I don't mind the slower aperture because I can compensate with ISO, so easy to shoot K-5 at 3200.

                I looked up the 18-125 performance and it compares favorably against any 18-200. SO I gave it a try. I was not disappointed. It is more than acceptable for casual situations, but don't expect to throw the background out of focus. At about 1/4 the price of the 17-50 & 50-135 combined, I cannot ask for more. The HSM is very sweet. Focus is fast and accurate. Since I shoot raw exclusively, lens distortions are mostly corrected (with LR 3) to my satisfaction.

                Construction is actually very good. I also have a Sigma 70-300 which is exceptional for the price. But the 70-300 has worse construction. However, the 18-125 is not in the same league as the Sigma 100-300 or the Pentax 50-135.

                The main con is the turn direction of the zoom ring. It is the reverse of every zoom I have.

                • Was this a gift?:
                • No

                Share this review

                (0 of 3 customers found this review helpful)

                 
                4.0

                quick and accurate

                By marigold

                from goose creek, sc

                About Me Casual Photographer

                Verified Buyer

                Pros

                  Cons

                  • Heavy

                  Best Uses

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

                  Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

                  I am a weekend warrior with a camera. I take shots of anything in front of my lens while trying to learn how to use my camera. One lens on a car trip is enough as long as it does what this one does. I can take close ups and telephoto shots all with one lens. It reacts quickly and quietly. I love this lens it gives me one less thing to worry about. Besides with lens on I can fit my cute purple pentax into my cute yellow JJill bag and have everything with me.

                  • Was this a gift?:
                  • Yes

                  Share this review

                  (8 of 8 customers found this review helpful)

                   
                  5.0

                  Wonderful lens - what else can I say ?

                  By Andrew

                  from Denver, CO

                  About Me Photo Enthusiast

                  Pros

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

                  Cons

                    Best Uses

                    • Landscape/Scenery
                    • Sports/Action
                    • Weddings/Events

                    Comments about Sigma 18-125mm f/3.8-5.6 DC HSM Zoom Lens:

                    Before I bought this lens, I was also considering Pentax models. In the end I picked Sigma. Lens has excellent speed and sharpness. Please take a look at my sample photo:[@]

                    Share this review

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