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Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax

Price: $899.00
Instant Savings: $100.00
You Pay: $799.00
Product Highlights
  • Zoom Wide Angle-Telephoto

The Sigma 24-70mm f/2.8 IF EX DG HSM Lens is a large aperture standard zoom lens that's ideal for photojournalism and general professional photography.  It provides (in 35mm terms) the equivalent of a 38-112mm f/2.8 lens upon current Pentax digital SLR cameras.  The lens provides a bright viewfinder, speedy AF, and full-time manual focus override at any time without having to change the focusing switch position.

The Hyper Sonic Motor (HSM) ensures silent, high-speed AF function, and this is the first 24-70mm f/2.8 for Pentax cameras that can boast of this feature.  The 24-70mm f/2.8 IF EX DG HSM features a Super Multi Layer Coating which reduces flare and ghosting.  "DG" is a designation Sigma uses upon lenses featuring optical systems designed to meet the performance characteristics of digital SLR cameras.

DG Lens Design
DG Lens design corrects for various aberrations, with special coatings to improve color balance and reduce digital-sensor-based ghosting.
HSM (Hyper Sonic Motor)
Sigma's Hyper Sonic Motor provides smooth, silent AF with full-time manual focus override possible without needing to touch any switch.
ELD & SLD Elements
This lens uses three ELD (Extra-Low Dispersion) elements and two SLD (Special Low Dispersion) elements to correct chromatic aberration.
9-Blade Aperture
The rounded 9-blade diaphragm opening makes out-of-focus elements appear more natural.
Performance
Focal Length 24 - 70mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Pentax Digital (APS-C)
Angle of View 84.1° - 34.3°
Minimum Focus Distance 1.25' (38 cm)
Magnification 0.18x
Maximum Reproduction Ratio 1:5
Elements/Groups 14/12
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread 82 mm
Dimensions (DxL) Approx. 3.5 x 3.7" (8.89 x 9.40 cm)
Weight 1.74 lb (790 g)
Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax
  • Front & Rear Lens Caps
  • Hood
  • Soft 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
    Sigma24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax
     
    4.4

    (based on 9 reviews)

    Ratings Distribution

    • 5 Stars

       

      (7)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (1)

    89%

    of respondents would recommend this to a friend.

    Pros

    • Fast / accurate auto-focus (7)
    • Strong construction (7)
    • Durable (6)
    • Rugged (6)
    • Consistent output (5)

    Cons

    • Heavy (4)

    Best Uses

    • Low light (6)
    • Landscape/scenery (4)
    • Night photography (4)
    • Sports/action (4)
    • Wildlife photos (4)
      • Reviewer Profile:
      • Photo enthusiast (5)
      • Was this a gift?:
      • No (6)

    Reviewed by 9 customers

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    Displaying reviews 1-9

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    4.0

    sharp and fast.

    By Mike

    from REVIEW_NUMBER_FIELD_

    About Me Photo Enthusiast

    Verified Buyer

    Pros

    • Fast / accurate auto-focus
    • Nice Bokeh
    • Rugged
    • Strong Construction

    Cons

    • Heavy

    Best Uses

    • Indoors/Low Light
    • Night Photography
    • Sports/Action
    • Wildlife Photos

    Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

    walk around lens.

    • Was this a gift?:
    • No

    Share this review

     
    1.0

    Sigma 24-70mm f/2.8

    By Josh

    from CO

    About Me Pro Photographer

    Verified Buyer

    Pros

      Cons

        Best Uses

          Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

          At 24mm this lens front focused 2mm. From 35 to 70mm the back focus steadly increaced to 12mm at 70mm.

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          5.0

          I am very happy finally!!!

          By Natali Gagnon

          from Montreal, Canada

          About Me Photo Enthusiast

          Verified Buyer

          Pros

          • Consistent Output
          • Durable
          • Fast / accurate auto-focus
          • Nice Bokeh
          • Strong Construction

          Cons

          • Heavy

          Best Uses

          • Portrait

          Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

          This lens is what I was waiting for a long time ago. Looking for different solutions including the Pentax 16-50mm F2.8 my choice fall on the Sigma and I can't tell you enough how happy I am with this lens. Very sharp, with portrait and close-up. Bokeh very soft and beautiful. The versatility of the focal length 24mm to 70mm is very usefull. The only thing is I would have like to have a bit more opening but I will probably buy another one for this reason like the new Sigma 16-35mm F1.8. And maybe yes it's big and heavy... But the result compensates well enough.

          I was afraid of going into another brand name to go with my Pentax K20D, this is my first Sigma but certainly not my last!

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          (3 of 3 customers found this review helpful)

           
          5.0

          Solid, yet crisp!

          By Richie Rich

          from Concord, NH

          About Me Photo Enthusiast

          Verified Buyer

          Pros

          • Durable
          • Fast / accurate auto-focus
          • Rugged
          • Sharp
          • Strong Construction

          Cons

          • Heavy

          Best Uses

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

          Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

          Yes, this lens is a bit heavy... but I'll take a solid lens that will last me forever, over a cheap one. I've only use this lens a few times so far, but I like what I see. The focus is fast and quiet, and the sharpness is awesome! As a lifelong Pentax shooter, the selection of lenses may be a bit less than some of the other brands... thankfully Sigma is there to help. My goal was to find a top shelf lens that would be my main lens... and I found it. A great compliment to my 50-500 Sigma.

          • Was this a gift?:
          • No

          Share this review

          (1 of 1 customers found this review helpful)

           
          5.0

          Excellent

          By JC Feller

          from Pensacola, FL

          About Me Pro Photographer

          Verified Buyer

          Pros

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

          Cons

            Best Uses

            • Indoors/Low Light
            • Landscape/Scenery
            • Sports/Action
            • Weddings/Events
            • Wildlife Photos

            Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

            Excellent lense. Great images from it. Super fast auto focus. While it seems heavy right out of the boxe the camera body and battery grip balances it out nicely.

            • Was this a gift?:
            • No

            Share this review

            (2 of 2 customers found this review helpful)

             
            5.0

            Really Nice Lens

            By Jacob

            from Southington, CT

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Consistent Output
            • Durable
            • Fast / accurate auto-focus
            • Nice Bokeh
            • Rugged
            • Strong Construction

            Cons

              Best Uses

              • Indoors/Low Light

              Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

              This lens is fantastic. The finish is great and it is very solid and well made. Auto focus is silent and fast. Great for low light and allows for prime lens quality pictures in a zoom. Bokeh is very pleasing with this lens as well. I really can't say enough good things about it. It is just a great all around lens for indoors or out.

              Pentax K10D did require a firmware update (free online) but has worked perfectly since. I think most newer models wouldn't have a problem though.

              • Was this a gift?:
              • No

              Share this review

               
              5.0

              Multipurpose lens zoom

              By Darraj

              from Bahrain

              About Me Semi-pro Photographer

              Verified Buyer

              Pros

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

              Cons

                Best Uses

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

                Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

                It is good lens; I haven't taken it off the camera since I purchased it. I mean it satisfies most of my requirement as a photographer.

                Share this review

                (2 of 2 customers found this review helpful)

                 
                5.0

                Excellent All Arounder

                By Jeff

                from Brooklyn, NY

                About Me Photo Enthusiast

                Verified Reviewer

                Pros

                • Consistent Output
                • Durable
                • Easily Interchangeable
                • Fast / accurate auto-focus
                • Nice Bokeh
                • No lens creep
                • Rugged
                • Strong Construction

                Cons

                • Expensive
                • Heavy
                • Too Large to Carry-Around

                Best Uses

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

                Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

                I've been raring to add this lens to my collection for nearly 2-years, in order to replace my aging Sigma 17-70 Macro, which doesn't seem to be able to keep up with the higher resolution in my K-5.

                First impressions of the 24-70 lens is that it's relatively big for a normal zoom lens, so much so that the lens itself feels larger and heavier than my k-5 body! The lens is so wide, that when attached to the body, it protrudes about 5mm past the K-5's bottom panel.

                Regardless of size, the K-5 with the lens on still handles nicely, flexibly and efficiently. The zoom ring rotates easily and smoothly, as does the focus ring (which can also manual focus while in AF!). I've been able to get down low with the setup for extended periods of time without any fatigue, of course, your mileage may vary.

                Irregardless of size, I purchased the lens for it's image quality, and of course to have the ability to shoot at f2.8 throughout the focal range. I do a lot of concert photography and work on shoots that have varying light conditions. So far, the 24-70 has excelled at meeting all my needs! It's reflexive enough within its zoom range to allow me capture fast-paced action, and maintains quick speed and adequate sharpness throughout its range at 2.8 (sharpness is really indefatigable above f4.5, though the K-5 helps with a lot of that heavy lifting!). The added bonus of HSM really allows the lens to be minimally invasive, especially when photographing in social settings (i.e. concert, or food-ie photogaphy), no more of the winding and grinding of my 17-70!

                In reality, this lens would be a 4.5 star lens, considering its size and price. But I really do believe this is the normal zoom lens you'll find for Pentax at the moment, so I'm rounding up to a 5.

                • Was this a gift?:
                • No

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                (6 of 6 customers found this review helpful)

                 
                5.0

                Sigma got it right

                By Thecodthemullet

                from Qld, Australia

                Verified Reviewer

                Pros

                • Great rendering
                • Sharp

                Cons

                • Large filter size

                Best Uses

                • General
                • Portraits

                Comments about Sigma 24-70mm f/2.8 IF EX DG HSM Autofocus Lens for Pentax:

                Great lens "portrait sharp" at 2.8 phenomenally sharp at f8 (equal if not better than 35ltd) great rendering. HSM is quiet and fast, build quality is great.

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