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Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR USA

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The Pentax 55mm f/1.4 DA* SDM Autofocus Lens is a compact and bright short-telephoto lens of the highest order, made exclusively for Pentax digital SLR cameras.  In a stocky housing ready for harsh conditions, you'll get a bright f/1.4 aperture-worlds away from the experience you're used to with more common zooms-that opens up new creative doors to you as a photographer.

This lens was born to shoot between f/1.4 and f/2.8, and comes with a 9-bladed aperture diaphragm which shows up as perfectly round when you stay between f/1.4-2.8.  Shoot dramatic portraits with bright point light sources behind the subject, and you'll be dazzled with lovely diffuse, circular out-of-focus highlights that make everybody look better.  Beyond portraits, this lens works well any time you would use a moderate telephoto focal length.

The focusing system of this lens is SDM only; there is no screw on the rear of the lens barrel to have the AF driven by a body-based motor.  This allows the lens to move incredibly quick, driven by an internal motor and with the Quick-Shift system providing manual override capacity to you any time you want it with no buttons to switch; but you'll need a Pentax body which allows SDM autofocus (all current Pentax bodies support SDM, but the *IST series does not).

Note! Does NOT provide autofocus upon non-SDM-enabled Pentax cameras.

Brilliantly-sharp portrait lens which gathers plenty of light
Completely-rounded aperture diaphragm from f/1.4-2.8 for beautiful out-of-focus highlights
Speedy SDM autofocus motor provides fast, silent response with Quick-Shift full-time manual override
Pentax's unique SP water and dirt-repelling coating on both external surfaces
Pentax's "Aero Bright" internal lens yields high transmissivity and reduced flare
Dust and moisture-resistant housing
Essentially equivalent to an 85mm f/1.4 lens upon 35mm SLR cameras
Performance
Focal Length 55 mm
Comparable APS-C Focal Length: 82.5 mm
Aperture Maximum: f/1.4
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 28.6°
Minimum Focus Distance 1.48' (45 cm)
Magnification 0.17x
Maximum Reproduction Ratio 1:5.7
Groups/Elements 8/9
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Physical
Filter Thread 58 mm
Dimensions (DxL) Approx. 2.8 x 2.6" (7.11 x 6.60 cm)
Weight 13.23 oz (375 g)

REVIEW SNAPSHOT®

by PowerReviews
PentaxTelephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR
 
4.8

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easily interchangeable (12)
  • Strong construction (12)
  • Consistent output (11)
  • Durable (11)
  • Fast / accurate auto-focus (11)

Cons

    Best Uses

    • Low light (12)
    • Night photography (10)
    • Weddings (9)
    • Portraits (7)
    • Landscape/scenery (6)
      • Reviewer Profile:
      • Photo enthusiast (11)
      • Was this a gift?:
      • No (11)

    Reviewed by 17 customers

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    Displaying reviews 1-17

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    5.0

    Mast have!!!!!!!

    By laert

    from Montreal,CA

    About Me Photo Enthusiast

    Verified Reviewer

    Pros

    • Consistent Output
    • Durable
    • Lightweight
    • Nice Bokeh
    • Rugged
    • Strong Construction

    Cons

      Best Uses

      • Macro Photography
      • Night Photography
      • Video
      • Weddings/Events
      • Wildlife Photos

      Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

      fantastic lens!!!!!!!!!!!!
      Great performer, 3-d effect,real color !!!
      magic bokeh!!!!!!!!!!
      FA 31, FA43 or DA55SDM, FA77, D FA100mmMACRO --------- Mast have!!!!!!!
      Stupid autofocus-- really bad work SDM. Perfect for manual work!!! 6mm depth perspective-Fantastic!!!!!

      Sharp from 1.8 ,from 2.0 sharp as blade!! From F1.4 to F1.6 acceptable sharp
      Need autofocus adjusting in camera body ( k-5) if not, you will have 3mm front or back focus -it is catastrophe for this lens!!!

      • Was this a gift?:
      • No

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      5.0

      Exudes quality.

      By Johno

      from Vancouver, BC

      About Me Photo Enthusiast

      Verified Buyer

      Pros

      • Durable
      • Easily Interchangeable
      • Nice Bokeh
      • Rugged
      • Strong Construction

      Cons

        Best Uses

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

        Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

        Sharpness wide open is subpar. This lens begins to pick up as you stop down a little bit. SDM may not be the fastest silent motor, but it is adequate for my needs. And it seems to lock in focus quite well. Bokeh simply exudes quality. Weather sealing was definitely a consideration when I purchased this lens. Makes a nice portrait lens for APS-C.

        • Was this a gift?:
        • No

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        5.0

        sharp, backfocus issue fixed

        By squiggles

        from brussels, belgium

        About Me Photo Enthusiast

        Verified Reviewer

        Pros

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

        Cons

          Best Uses

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

          Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

          This is a great lens. Super sharp and wonderful blur. Backfocus WAS a big issue, needing and adjustment of +10 (ie maximum possible) with my k5, and impossible to use with my k10. However, contacted Pentax service (Belgium) and sent in the lens and both bodies. Backfocus fixed on both bodies (needing just -2 adjustment on k5, ever soooo slight backfocus on my k10). I've tested the lens on both cameras from about 25cm to infinity. Great across the whole range!

          • Was this a gift?:
          • Yes

          Share this review

           
          4.0

          Fast and Sharp... But

          By Garfish

          from Pacific Northwest

          About Me Photo Enthusiast

          Verified Buyer

          Pros

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

          Cons

            Best Uses

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

            Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

            I use this lens for night shooting-- often at our commercial boat basin where lighting is low with wildly mixed colors. I needed weather sealing for this and the DA* 55mm f1.4 delivers-- and it's also very well built. Re sharpness and contrast: useable wide open and criticly sharp by f2.8. My only problem was significant back focus and I had to micro adjust +9 to 10 units to get accurate focus(I have 2 K5s). But it was worth it as the lens is both very sharp and contrasty. I don't find this lens heavy on the K5.

            • Was this a gift?:
            • No

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            4.0

            A Lens Worth Gertting to Know

            By Garfish

            from The Great Pacific Northwest

            About Me Photo Enthusiast

            Verified Buyer

            Pros

            • Critically sharp at f28
            • Durable
            • Easily Interchangeable
            • Fast / accurate auto-focus
            • Nice Bokeh
            • Rugged
            • Strong Construction

            Cons

            • Micro-adjust needed

            Best Uses

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

            Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

            I bought this lens almost exclusivly for outdoor night time use, but I'm discovering that it's an excellent general purpose lens with other uses as well such as scenics, portrait situations, and general nature shooting. Build quality is excellent and it's a bit larger/heavier than a typical 50mm f1.4 lens. When I first got the 55 f1.4, I found it to be very very soft wide open, in fact so soft I considered returning it, but I have a K5 and decided to see if micro-adjustment could correct the problem. It did, but I had to go to +10 on one body and +8 on my 2nd K5. Once corrected, this lens is still a bit soft wide open, but now quite useable-- part of that is low contrast-- f2 is better, and it's critacally sharp at f2.8 through f11. I'm glad I went the micro-adjust route as it is now optically an excellent performer, but really a lens this expensive shouldn't have that kind of issue in the first place IMO. Although a bit heavy, it feels good in use on the K5. I only gave this lens a 4 star rating because of the need for significant micro-adjusting-- once adjusted it's a five star.

            • Was this a gift?:
            • No

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            5.0

            excellent product

            By joe

            from Detroit, MI

            About Me Photo Enthusiast

            Verified Buyer

            Pros

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

            Cons

              Best Uses

              • Indoors/Low Light
              • Weddings/Events

              Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

              very quiet lens. Quick acquisition of subject matter. Great for close-ups. Really love that it picks up a lot of ambient light

              • Was this a gift?:
              • No

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              5.0

              Quality shines through

              By Lex Madera

              from Virginia, Austria, Ukraine

              About Me Photo Enthusiast

              Verified Buyer

              Pros

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

              Cons

                Best Uses

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

                Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                Have not used this lens extensively yet, but thus far very pleased that I chose this as my 1st prime lens. It is sharp, fast and crisp. It has a nice heft to it on the camera body.

                • Was this a gift?:
                • No

                Share this review

                 
                4.0

                Great Lens

                By Jay

                from Oregon

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                • Consistent Output
                • Durable
                • Easily Interchangeable
                • Lightweight
                • Nice Bokeh
                • Rugged
                • Strong Construction

                Cons

                • Slow Focus

                Best Uses

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

                Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                Very nice lens, would give 5 stars if it focused faster.

                • Was this a gift?:
                • No

                Share this review

                (1 of 1 customers found this review helpful)

                 
                5.0

                My favorite lens

                By Dmitry

                from Russia

                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
                  • Portraits

                  Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                  The lens I use most of the time. I really like to shoot portraits of them. The lens has excellent bokeh, sometimes it seems to me that the picture painted with colored pencils%)

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  Great product at a price

                  By zedbeat

                  from Toronto, ON

                  About Me Semi-pro Photographer

                  Verified Buyer

                  Pros

                  • Fast accurate auto-focus
                  • SDM focusing
                  • Sharp at all focal length

                  Cons

                    Best Uses

                    • General Purpose
                    • Low Light
                    • Portraits

                    Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                    I needed a lens for low light photography and debated about getting this or the Pentax 16-50mm f2.8 zoom. This won out because of the greater low light capability. In terms of convenience the zoom would have been better perhaps but in the situations I work in I can move to get the perspective I need. I also like the wonderful bokeh and with f1.4 I can isolate my subject nicely. It is also less money than the zoom. While nevertheless expensive, it is quality, and I've never regretted buying quality.

                    • Was this a gift?:
                    • No

                    Share this review

                    (0 of 1 customers found this review helpful)

                     
                    5.0

                    A very good lens!

                    By CHEN

                    from Boulder, CO

                    About Me Photo Enthusiast

                    Pros

                    • Consistent Output
                    • Durable
                    • Easily Interchangeable
                    • Strong Construction

                    Cons

                    • Heavy
                    • Slow Focus

                    Best Uses

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

                    Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                    after you touch this lens, I am sure you would love it and have it! But the price is little high.

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    5.0

                    Great portrait lens

                    By Jus

                    from Alma-Ata, Kazakhstan

                    About Me Photo Enthusiast

                    Verified Buyer

                    Pros

                    • Nice Bokeh

                    Cons

                      Best Uses

                      • Indoors/Low Light
                      • Landscape/Scenery

                      Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                      With open hole it is great for portraits, starting with 5.6 - for landscape panoramas.

                      • Was this a gift?:
                      • No

                      Share this review

                      (1 of 3 customers found this review helpful)

                       
                      4.0

                      Realy nice lens

                      By Tjom

                      from Norway

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

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

                      Cons

                      • Bad design

                      Best Uses

                      • Indoors/Low Light
                      • Night Photography
                      • Portraits
                      • Weddings/Events

                      Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                      I love the lens in almost all ways. It's sharp, fast focusing, needs very little light in F1.4 and the quick shift to manual focus is really OK to have.

                      The downside is its' sunscreen. When I mounted a B&W Protection filter on the lens the sunscreen would not attach anymore hence the filter built out an extra 0,5 mm all around. That's poor design!

                      Share this review

                      (2 of 2 customers found this review helpful)

                       
                      5.0

                      Fast crisp lens, excellent bokeh

                      By KAngle

                      from Unionville, CT

                      About Me Casual Photographer

                      Verified Buyer

                      Pros

                      • Consistent Output
                      • Durable
                      • Easily Interchangeable
                      • Quick Focus
                      • Rugged
                      • Sharp Focus
                      • Strong Construction

                      Cons

                        Best Uses

                        • Portraits

                        Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                        Great lens for portraits paired with the K7, really great bokeh and very sharp images. Could have a little more weight to it for such an expensive lens, but still great build quality.

                        Share this review

                        (1 of 1 customers found this review helpful)

                         
                        5.0

                        Versitile!

                        By Bob

                        from Shelton, CT

                        About Me Hobbyist/Enthusiast

                        Verified Buyer

                        Pros

                        • Versitility

                        Cons

                          Best Uses

                          • Everyday use
                          • Macro Photography
                          • Portraits

                          Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                          First, this lens produces an accurate reproduction. The f/1.4 aperature has opened-up a whole new range of photo oppurtunities.

                          Share this review

                          (3 of 3 customers found this review helpful)

                           
                          5.0

                          Sharp accurate and well built

                          By DavidB71

                          from Sydney, Australia

                          About Me Semi-Professional

                          Verified Buyer

                          Pros

                          • Consistent Output
                          • Durable
                          • Easily Interchangeable
                          • Quick Focus
                          • Rugged
                          • Sharp Focus
                          • Strong Construction

                          Cons

                            Best Uses

                            • General Use
                            • Night Photography
                            • Portraiture

                            Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                            A great portrait lens for APS-C.
                            Rendering is much like the FA50/1.4 only much sharper at wide apertures (f1.4-2.0).

                            Like the FA50/1.4 bokeh can hard edged if the background is complex, but this also leads to wonderful disc rendering of background lights in night shots.

                            Focus is very accurate on my k-7 (no adjustment required).

                            Build quality is excelent.

                            Love this lens.

                            Share this review

                            (7 of 9 customers found this review helpful)

                             
                            5.0

                            Wonder lens

                            By Dave the Caver

                            from Louisville, KY

                            Verified Reviewer

                            Pros

                              Cons

                                Best Uses

                                • Portraits

                                Comments about Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR:

                                The DA*55 f1.4 is great lens and like great lenses cost more than your average lens. The lens is very sharp from f2.0. The boken is smooth. There is not PF even wide open. With SDM the AF is fast enough and it doesn't "hunt" any.

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