What item is right for you?
Ask our Experts! 800.606.6969 Live Chat

Sigma 2x EX DG APO Teleconverter USA

B&H # SI2XDGPAF MFR # 876109
No Longer Available
Product Highlights
  • For Pentax AF

The Sigma 2x EX DG APO Tele Converter (also known as a tele-extender) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300mm lens will effectively increase the focal length to 600mm. A lens set to f/2.8 will now be f/5.6.

Note: Sigma APO Tele Converter 1.4x and 2x are dedicated teleconverter lenses. Due to the high optical quality of this teleconverter, this item will only fit and work with a select list of lenses. Please click here for a compatibility chart of all compatible lenses.

The DG denotes added coatings that achieve the best color balance while also cutting down on ghosting caused by reflections from the digital image sensor.
Elements/Groups 6/5
Dimensions 2.7 x 2 (68.5 x 52mm)
Weight 8.3 oz (234 g)
Sigma 2x EX DG APO Teleconverter
  • Front & Rear Lens Caps
  • Soft Case
  • 1-Year Worldwide Warranty + 3-Year Extended USA Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Sigma2x EX DG APO Teleconverter
     
    3.1

    (based on 7 reviews)

    Ratings Distribution

    • 5 Stars

       

      (1)

    • 4 Stars

       

      (2)

    • 3 Stars

       

      (2)

    • 2 Stars

       

      (1)

    • 1 Stars

       

      (1)

    50%

    of respondents would recommend this to a friend.

    Pros

      Cons

        Best Uses

            • Reviewer Profile:
            • Photo enthusiast (3)
            • Was this a gift?:
            • No (3)

          Reviewed by 7 customers

          Sort by

          Displaying reviews 1-7

          Back to top

          (2 of 3 customers found this review helpful)

           
          1.0

          NOT FOR ME

          By nanadoo

          from Virginia

          About Me Photo Enthusiast

          Verified Buyer

          Pros

            Cons

            • Blurry Focus
            • Tough To Attach

            Best Uses

              Comments about Sigma 2x EX DG APO Teleconverter:

              TRIED THIS ON MY PENTAX K-5 WITH MY SIGMA 70-200 and SIGMA 120-400....AF NOT AVAILABLE ON EITHER LENS. Was never able to get an image I felt was sharp.

              • Was this a gift?:
              • No

              Share this review

              (1 of 2 customers found this review helpful)

               
              4.0

              2x EX DG APO Teleconverter

              By BrewerBob

              from Essex, MD

              About Me Photo Enthusiast

              Verified Buyer

              Pros

                Cons

                • Slow Focus

                Best Uses

                • Landscape/Scenery
                • Wildlife Photos

                Comments about Sigma 2x EX DG APO Teleconverter:

                Does not auto focus with the Sigma 70-200mm f/2.8 II EX DG APO Macro HSM AF Lens for Pentax even tho it is listed as working with it. I have not called about this yet as autofocus isn't a big consideration.

                • Was this a gift?:
                • No

                Share this review

                (0 of 2 customers found this review helpful)

                 
                3.0

                NOTE: Not Compatible with Sigma 70-200 f

                By Jan

                from Norway

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                  Cons

                    Best Uses

                      Comments about Sigma 2x EX DG APO Teleconverter:

                      Unfortunately this is not compatible with the Sigma 70-200 lens I just bought for my Pentax, so I have not actually tried it. Recomend to check Sigma compatibility chart prior to ordering. [@] [...]

                      • Was this a gift?:
                      • No

                      Share this review

                      (0 of 1 customers found this review helpful)

                       
                      4.0

                      GOOD RESOURCE TO EXTEND THE YIELD

                      By JOHN MAYSHASH

                      from Colombia

                      About Me Pro Photographer

                      Verified Buyer

                      Pros

                      • Durable
                      • Nice Bokeh
                      • Strong Construction

                      Cons

                        Best Uses

                        • Wildlife Photos

                        Comments about Sigma 2x EX DG APO Teleconverter:

                        Recommendable to extend the yield of the primary objective when it is not had a ampler focal length, a little light is lost but it is worth the pain.
                        It is important before acquiring to see it if one adjusts with your objective, does not adjust to all the optical.

                        • Was this a gift?:
                        • Yes

                        Share this review

                        (2 of 3 customers found this review helpful)

                         
                        3.0

                        Not a mach with Pentax K10D & HSM Lens

                        By Troool

                        from Houston, TX

                        About Me Semi-pro Photographer

                        Verified Buyer

                        Pros

                        • Easy to Use

                        Cons

                        • Did Not lock to 70-200
                        • No HSM autofocus
                        • Not Functional

                        Best Uses

                          Comments about Sigma 2x EX DG APO Teleconverter:

                          #1 Did not lock to Sigma 70-200mm F2.8 DX II HSM lens

                          #2 The HSM did not work and I had to manual focus it. Had to return it hoping that Sigma will relies an HSM version soon.

                          Share this review

                          (3 of 4 customers found this review helpful)

                           
                          2.0

                          Pentax K10D & Sigma HSM Lens Issue

                          By bhiii

                          from Kaysville, Utah

                          About Me Hobbyist/Enthusiast

                          Verified Buyer

                          Pros

                            Cons

                              Best Uses

                                Comments about Sigma 2x EX DG APO Teleconverter:

                                Could not use.

                                Would not work with my new Sigma 70-200mm F2.8 DX II HSM lens on my Pentax K10D. Very dissappointed especially to the fact that this is not a well advertised or know fact.

                                Had to return and hope someday Sigma accomodates this issue to apease us Pentaxians. Gotta love being a minority. So much for converting a very good 70-200mm f2.8 lens.

                                Share this review

                                (10 of 10 customers found this review helpful)

                                 
                                5.0

                                Not as bad as I'd feared

                                By CinC

                                from Hamburg, PA

                                About Me Hobbyist/Enthusiast

                                Verified Buyer

                                Pros

                                • Easy to Use
                                • Improves Function
                                • Lightweight

                                Cons

                                  Best Uses

                                  • birds

                                  Comments about Sigma 2x EX DG APO Teleconverter:

                                  Used on the 'Bigma' this TC of course kills AF, but tracking birds and manually focusing wasn't as difficult as I was expecting.
                                  And while it does cause some softening of the image this is slight- I could still make out fine detail in a robin's feathers.

                                  Share this review

                                  Cases & Straps

                                  OP/TECH USA -  Fold-Over Pouch #303 (Black)
                                  • You Pay: $11.95
                                   

                                  Care & Cleaning

                                  Show more >
                                  Pearstone -  Microfiber Cleaning Cloth, 18% Gray (7 x 7.9")
                                  • You Pay: $4.99
                                   
                                  See any errors on this page? Let us know.

                                  Close

                                  Close

                                  Close