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Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses

B&H # PE14C MFR # 37962
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Product Highlights

  • PENTAX HD Multi-Layer Lens Coating
  • Weather-Resistant and Dustproof Design
  • Increases Focal Length by 1.4x
  • Reduces Lens Aperture by 1 f/Stop
  • Lens's Minimum Focus Distance Retained
  • Auto Focus, Auto Aperture Retained
  • Works Seamlessly with Camera and Lens AF
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Price: $596.95

Instant Savings: $100.00

You Pay: $496.95

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The 1.4x HD PENTAX-DA AF Rear Converter AW from Ricoh is compatible with Pentax KAF2 mount lenses on select DSLR cameras. It mounts between the camera body and lens, and increases the focal length of the lens by 1.4x, while reducing the aperture by 1 f/stop. The minimum focus distance of the lens is preserved, as are auto focus and auto aperture functionality. The rear converter works flawlessly with both the camera-driven AF system and the lens-driven AF system, including that of the SDM and DC-series lenses. The camera's firmware must be updated to the latest version before using the autofocus function.

PENTAX HD Lens Coating
Treated with Pentax's exclusive multi-layer lens coating, which provides high light transmission and low reflectance for sharp, clear images free of flare and ghosting--even under adverse lighting conditions, such as backlighting.
Weather-Resistant
Durable, weather-resistant construction protects the converter and the barrels of compatible, weather-sealed lenses. Shoot worry-free in rainy or misty conditions and when subjected to sprays or splashes.
1.4x Magnification in a Compact Form Factor
Mounts between the camera body and lens and increases lens focal length by 1.4x (40%)--yet has a notably small form factor, measuring only 0.8" and weighing in at just 4.4 oz. This compact size allows you to reach out to distant subjects and capture blur-free shots more easily. Since the minimum focusing distance of the lens is retained, this converter allows you to get just as close as before--but with greater magnification for more detailed images. Keep in mind that when the converter is mounted, the lens's maximum aperture will be smaller by 1 f/stop.
Auto Focus and Aperture Functionality
Auto focus and auto aperture functionality retained when using the converter, which works flawlessly with both the camera-driven AF system and the lens-driven AF system, such as that on the SDM and DC-series lenses. The camera's firmware must be updated to the latest version before using the autofocus function.
Compatible Lenses
The converter is compatible with Pentax KAF2 mount lenses. Autofocus is possible with lenses featuring a maximum aperture of f/4 or faster.
Compatible Cameras
K-3, K-50, K-500, K-30, K-5 II, K-5 II s, K-5, K-01, K-7 and K-r.
Bundled Accessories
The DA Limited Soft Case for the HD PENTAX DA and smc PENTAX DA 70mm f/2.4 Limited lenses is supplied. Also included are the Lens Mount Cap K and Body Mount Cap K.
Magnification 1.4x
Lens Mount Pentax KAF2
Lens Elements/Groups 4/3
Light Loss 1 f/stop
Length Approx. 0.8" / 20 mm
Diameter Approx. 2.6" / 65 mm
Weight Approx. 4.4 oz / 126 g
Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses
  • 70mm DA Soft Lens Case
  • Rear Lens Cap (B) for Bayonet Mount Lenses
  • Body Mount Cap K
  • Limited 1-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses
     
    4.9

    (based on 19 reviews)

    Ratings Distribution

    • 5 Stars

       

      (18)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Easy to use (15)
    • Great picture quality (14)
    • Lightweight (14)
    • Compact (13)
    • Durable (9)

    Cons

      Best Uses

      • Wildlife photos (13)
      • Travel (8)
      • Sports/action (6)
      • Landscape/scenery (5)
        • Reviewer Profile:
        • Photo enthusiast (11), Semi-pro photographer (5)
        • Was this a gift?:
        • No (16)

      Reviewed by 19 customers

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      Displaying reviews 1-19

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      5.0

      Great lens

      By John

      from Ut.

      About Me Photo Enthusiast

      Verified Buyer

      Pros

      • Compact
      • Durable
      • Easy to Use
      • Great Picture Quality
      • Lightweight

      Cons

        Best Uses

        • Wildlife Photos

        Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

        Nice extension lens.
        Lets me get closer to what I shoot.

        • Was this a gift?:
        • No

        Share this review

        (1 of 1 customers found this review helpful)

         
        5.0

        Flawless

        By Marie Glynn

        from Pullman, WA

        About Me Semi-pro Photographer

        Verified Buyer

        Pros

        • Compact
        • Durable
        • Easy to Use
        • Great Picture Quality
        • Lightweight

        Cons

          Best Uses

          • Landscape/Scenery
          • Moon Shots
          • Wildlife Photos

          Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

          Use it mainly for moon shots on the Pentax 60-250mm zoom. Yes it's pricey but for me it was a good compromise between it and the cost and size/weight of another lens.

          I say flawless as I noticed no loss in image quality from what I can get out of that lens at 250mm and the increased angle of view. I am not including a sample image because the quality of these review samples is so low that you would not be able to judge.

          Pricey but absolutely worth it.

          • Was this a gift?:
          • No

          Share this review

          (1 of 1 customers found this review helpful)

           
          5.0

          Better than I thought passible!

          By Geoteery

          from Grants Pass, OR

          About Me Semi-pro Photographer

          Verified Buyer

          Pros

          • Compact
          • Easy to Use

          Cons

            Best Uses

            • Landscape/Scenery
            • Travel
            • Wildlife Photos

            Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

            Exceeded my expectawhentions when testing in the field. Took photos of a two ducks in a lake near our home. Used back focus techniques, 300mm F4 with 1.4 converter show wide open at F5.6 and ISO 400 to stop movement at 1200 and 2000 shutter speed.

            • Was this a gift?:
            • No

            Share this review

            (1 of 1 customers found this review helpful)

             
            5.0

            way beyond expectations

            By scozza

            from new zealand

            Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

            I have previously used teleconverters, and they have always lacked the sharpness required. However, I took a chance with this one due to the great reviews. Still I was amazed at the sharpness. Almost no sharpness lost and chromatic aberrations not an issue. I have tried with both 300mm and the 60-250mm, works well with both. No noticeable loss of AF speed. It may seem expensive, but because it is so good, this is a reasonable cost to pay for the extra reach. Plus it is very compact and light so won't take up much space in the gadget bag. Yes I would recommend this teleconverter.

            Share this review

             
            5.0

            Now Have a Light Long Lens

            By Kath

            from Portland, OR

            Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

            Have found this teleconverter to produce beautiful results with my Pentax F*300mm lens. Despite the lens' 4.5 minimum focal length, the autofocus works perfectly. The F*300 is known for its high image quality and lovely bokeh and I see no degradation of either with this 1.4x TC. Though I also shoot with a Sigma 150-500mm, the 300/1.4x combo is wonderfully light for a 420mm equivalent (longer when considering the crop camera effect), really handy for handheld shooting or longer hikes. I have also tried it with a lower quality 55-200 zoom and found no difficulties. This TC is well made and speaks highly of Pentax' efforts to provide us with a quality optic that will be carried in the kit and used often on all kinds of lenses. One of my best purchase choices.

            Share this review

            (1 of 1 customers found this review helpful)

             
            5.0

            No loss of IQ

            By Mike

            from Traverse City, Michigan

            About Me Semi-pro Photographer

            Verified Reviewer

            Pros

            • Compact
            • Easy to Use
            • Great Picture Quality
            • Lightweight

            Cons

              Best Uses

              • Sports/Action
              • Travel
              • Wildlife Photos

              Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

              I use this for wildlife with my 60-250DA* which turns it into 525 FF equivalant and to make my 90mm macro longer and actually give me 1.4x life size since you can still focus as close as before this also goes for the other lenses as well . It also turns my 17-50 F2.8 into a great walk around for city stuff. If it needs a little more length I just put on the TC and only lose one stop.

              • Was this a gift?:
              • No

              Share this review

              (1 of 1 customers found this review helpful)

               
              5.0

              Works with old glass

              By Rich

              from Boulder, CO

              About Me Photo Enthusiast

              Verified Buyer

              Pros

                Cons

                  Best Uses

                    Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                    The 1.4x HD PENTAX-DA AF Rear Converter AW when used with the FA* 4.5 300mm produces sharp images and the autofocus works, if at a slower speed. New life for old glass Thanks Ricoh-pentax

                    • Was this a gift?:
                    • No

                    Share this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    K3+DA* 300+1.4x HD - A Perfect Combo!

                    By ULong

                    from Fairfax, VA

                    About Me Photo Enthusiast

                    Verified Reviewer

                    Pros

                    • Compact
                    • Durable
                    • Easy to Use
                    • Great Picture Quality
                    • Lightweight

                    Cons

                      Best Uses

                      • Wildlife Photos

                      Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                      I've been using AFA 1.7x with my DA* 300mm lens, pretty happy with the results, but after pairing this converter on K3, oh man, you don't feel it exists, it's simply perfectly extends the 300mm to 420mm lens, without compromising AF speed and image quality, I use this combo mainly for birding and wildlife, I'm thrilled with the results! and super happy with the purchase, especially after BH refunded me to match the correct price, good policy, excellent service!

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      5.0

                      Perfect companion to DA* 300/4

                      By Baro-nite

                      from Durham, NC

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

                      • Compact
                      • Durable
                      • Easy to Use
                      • Great Picture Quality
                      • Lightweight

                      Cons

                        Best Uses

                        • Sports/Action
                        • Wildlife Photos

                        Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                        Outstanding paired with the DA* 300/4. AF is quick and accurate, and optical quality is excellent.

                        • Was this a gift?:
                        • No

                        Share this review

                        (2 of 2 customers found this review helpful)

                         
                        5.0

                        Excellent teleconverter

                        By Ed in CA

                        from SF Bay Area, CA

                        Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                        So far I'm very happy with this purchase. I've only used it on my Pentax DA*300 lens to shoot birds and the results are excellent. From careful examination on my monitor I'd judge them better than a crop would be. It adds very little weight and the K3 tele/lens combo is well balanced.

                        Share this review

                        (8 of 8 customers found this review helpful)

                         
                        5.0

                        Excellent telephoto adapter

                        By Jack

                        from Morgan Hill, CA

                        About Me Photo Enthusiast

                        Verified Buyer

                        Pros

                        • Durable
                        • Easy to Use
                        • Great Picture Quality
                        • Lightweight

                        Cons

                          Best Uses

                          • Travel
                          • Wildlife Photos

                          Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                          I get really sharp pictures with this adapter using it with my Pentax 60-250 DA* and my Sigma 150-500. Don't forget to upgrade your Pentax camera firmware to the latest level that supports this adapter. All weather is a big plus for wild life photography.

                          • Was this a gift?:
                          • No

                          Share this review

                          (0 of 5 customers found this review helpful)

                           
                          4.0

                          Very well built, just not for me.

                          By Ricardo

                          from Pittsburgh, PA

                          About Me Photo Enthusiast

                          Verified Buyer

                          Pros

                          • Compact
                          • Durable
                          • Easy to Use
                          • Great Picture Quality
                          • Lightweight

                          Cons

                            Best Uses

                            • Family Photos
                            • Travel

                            Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                            I have no gripes about this teleconverter other than price. It functioned as expected and worked flawlessly with all three of my lenses, I just didn't get enough bang for my dollar. I returned it for a Sony HX400V and saved $142, while getting the zoom I really wanted.

                            • Was this a gift?:
                            • No

                            Share this review

                            (6 of 6 customers found this review helpful)

                             
                            5.0

                            more than I could expect

                            By marshlander

                            from French Guiana

                            About Me Photo Enthusiast

                            Verified Buyer

                            Pros

                            • Compact
                            • Durable
                            • Easy to Use
                            • Great Picture Quality
                            • Lightweight

                            Cons

                              Best Uses

                              • Wildlife Photos

                              Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                              I bought the converter to gain some reach with my DFA 100mm macro WR and DA* 300 mm.
                              The result is more than good : almost no lost in image quality.
                              Whith K3, using the converter gives me clearly better images than cropping whithout converter.

                              • Was this a gift?:
                              • No

                              Share this review

                              (4 of 4 customers found this review helpful)

                               
                              5.0

                              Amazing Teleconverter

                              By RGV Birder

                              from Rio Grande Valley, Texas

                              About Me Photo Enthusiast

                              Verified Reviewer

                              Pros

                              • Compact
                              • Durable
                              • Easy to Use
                              • Great Picture Quality
                              • Lightweight

                              Cons

                                Best Uses

                                • Landscape/Scenery
                                • Sports/Action
                                • Travel
                                • Wildlife Photos

                                Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                                This tc is an amazing lens. I have matched it with the Pentax 300 f4 DA and have been testing it for the last couple of weeks with the K-3. In my informal tests, I cannot see any loss of resolution compared to the the 300 without the tc. I get the same results with my 50-135 and my 200mm DA. The SDM autofocus is fully functional and works fast with the tc attached. The cost in all cases is the losss of one f-stop. Further, I have tested this tc with two Tamron lenses and it functions perfectly (including auto focus) with these lenses, except the SDM reverts to the older screw-drive system. With the 300mm, the focal length becomes 420 which fills a big hole in the Pentax lens lineup. Worth the price!

                                • Was this a gift?:
                                • No

                                Share this review

                                (5 of 6 customers found this review helpful)

                                 
                                5.0

                                Great addition to your lens inventory!

                                By Rolland S

                                from Loveland, CO

                                About Me Semi-pro Photographer

                                Verified Buyer

                                Pros

                                • Easy to Use
                                • Great Picture Quality
                                • Lightweight

                                Cons

                                  Best Uses

                                    Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                                    As advertised: no difference in image quality with or without the converter. It gives each of your compatible lenses the extra "reach" you often wish you had at half the cost of the next-longer lens. I gave a lot of thought to the $ price, but one day of use cancels out any doubts. It was money well-spent.

                                    • Was this a gift?:
                                    • No

                                    Share this review

                                    (2 of 2 customers found this review helpful)

                                     
                                    5.0

                                    Makes your lens inventory complete

                                    By Rolland S

                                    from Loveland, CO

                                    About Me Semi-pro Photographer

                                    Verified Buyer

                                    Pros

                                    • Compact
                                    • Easy to Use
                                    • Great Picture Quality
                                    • Lightweight

                                    Cons

                                      Best Uses

                                      • Landscape/Scenery
                                      • Sports/Action
                                      • Travel
                                      • Weddings/Events
                                      • Wildlife Photos

                                      Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                                      Gives that extra reach to the lenses you already own. I have the DA* 200, the DA* 50/135 zoom and a Sigma 17/70 zoom. It works magic with each of them and provides the additional "reach" without the cost of a 300 mm. I've found the converter to be just as sharp as the lens without the converter. Only under certain lighting conditions have I noticed any aberration, which is easily corrected in LightRoom. You have to be "pixel-hunting" to notice it. Great product!

                                      • Was this a gift?:
                                      • No

                                      Share this review

                                      (7 of 7 customers found this review helpful)

                                       
                                      5.0

                                      Works great

                                      By Toad

                                      from Grand Junction, CO

                                      About Me Photo Enthusiast

                                      Verified Buyer

                                      Pros

                                      • Compact
                                      • Easy to Use
                                      • Great Picture Quality
                                      • Lightweight

                                      Cons

                                        Best Uses

                                        • Family Photos
                                        • Sports/Action
                                        • Wildlife Photos

                                        Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                                        Works well and maintains all lens functions and focus, including fine focus adjustment. Have used with DA*300mm, DA 35mm F2.8 Limited Macro, D FA 100mm F2.8 Macro WR, and DA 18-250mm F3.5-6.3 (even though supposed to be used with lenses max aperture at least F4). Very sturdy but small and light weight. K-5 camera recognizes the adjusted F stops and focal lengths. Image quality appears to maintained as with the lens without the converter.

                                        • Was this a gift?:
                                        • No

                                        Share this review

                                        (2 of 2 customers found this review helpful)

                                         
                                        5.0

                                        works great

                                        By patricklgv

                                        from Bloomfield, CA

                                        About Me Photo Enthusiast

                                        Verified Reviewer

                                        Pros

                                        • Compact
                                        • Durable
                                        • Easy to Use
                                        • Great Picture Quality
                                        • Lightweight

                                        Cons

                                          Best Uses

                                          • Travel
                                          • Wildlife Photos

                                          Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                                          I took this converter to extend the range of my 60 - 250mm lens on an African safari. It performed flawlessly. Just as sharp as the lens itself. Highly recommended.

                                          • Was this a gift?:
                                          • No

                                          Share this review

                                          (8 of 8 customers found this review helpful)

                                           
                                          5.0

                                          Worth Every Penny

                                          By Colorado Bear

                                          from Colorado Springs, CO

                                          About Me Photo Enthusiast

                                          Verified Buyer

                                          Pros

                                          • Compact
                                          • Easy to Use
                                          • Great Picture Quality
                                          • Lightweight

                                          Cons

                                            Best Uses

                                            • Landscape/Scenery
                                            • Sports/Action
                                            • Travel
                                            • Wildlife Photos

                                            Comments about 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses:

                                            We most certainly could not afford the $[$]for the 560mm f5.6, and we already have the 300mm f4 (a sweet lens). So, what could we do to extend our reach? Pentax just released the answer, the 1.4x rear converter.We tested the 1.4x at the annual Sandhill Crane migration in Kearney, Nebraska, using a K-3. It made a huge difference in our ability to capture "the shot." Yes, we could have zoomed and cropped using shorter lenses. But my wife and I are firm believers that the best shots are always composed in the camera first. The less digital manipulation, the better. The results with this 1.4x rear converter have absolutely been worth the price. And the loss of one f-stop is highly acceptable, given the ASA capabilities of the Pentax cameras.Be sure you have one of the recommended Pentax cameras before you buy this, as the firmware for older cameras (e.g., K10D, K20D) cannot compensate for this lens.

                                            • Was this a gift?:
                                            • No

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