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Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF USA

You Pay: $499.00

The Sigma 50mm f/1.4 EX DG HSM Autofocus Lens is a standard lens that provides a large maximum aperture of f/1.4. It is the ideal prime lens for use with all Pentax digital or film SLR cameras. When used on Pentax digital SLR cameras with the smaller APS-C size sensor, the equivalent focal length of this lens will be 75mm, which makes it an excellent choice as a bright medium telephoto lens. Its large f/1.4 aperture allows for sharply defined contrasty images against a nicely blurred background. The lens offers superior peripheral brightness even at the maximum aperture, and corrects for possible flare.

The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance, while cutting down on ghosting caused by reflections from the digital image sensor. The lens provides the utmost correction against lateral chromatic aberration, which is a serious problem for digital SLR cameras.

This lens also incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focus override.

EX lens series denotes excellence of engineering and new technology
Super multi-layer lens coating reduces flare and ghosting
Equipped with the silent, responsive and high speed Hyper Sonic Motor and provides full time manual focus override
Performance
Focal Length 50mm
Aperture Maximum: f/1.4
Minimum: f/16
Camera Mount Type Pentax K
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Pentax Digital (APS-C)
Angle of View 46.8°
Minimum Focus Distance 1.48' (45 cm)
Magnification 0.13x
Maximum Reproduction Ratio 1:7
Elements/Groups 8/6
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Physical
Filter Thread 77 mm
Dimensions (DxL) Approx. 3.3 x 2.7" (8.38 x 6.86 cm)
Weight 1.11 lb (505 g)
Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF
  • Front Lens Cap
  • Rear Lens Cap
  • Lens Hood
  • Lens 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
    SigmaNormal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF
     
    4.6

    (based on 21 reviews)

    Ratings Distribution

    • 5 Stars

       

      (13)

    • 4 Stars

       

      (7)

    • 3 Stars

       

      (1)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Fast / accurate auto-focus (18)
    • Nice bokeh (16)
    • Strong construction (15)
    • Durable (12)
    • Consistent output (10)

    Cons

    • Heavy (8)

    Best Uses

    • Low light (15)
    • Weddings (11)
    • Landscape/scenery (10)
    • Night photography (9)
    • Portraits (4)
      • Reviewer Profile:
      • Photo enthusiast (9), Semi-pro photographer (4), Photography student (3)
      • Was this a gift?:
      • No (14)

    Most Liked Positive Review

     

    Bokeh Master

    This lens is the master of Bokeh.

    Beautiful tack sharp images with a bokeh background can be achieved with a bit of manual focusing.

    In low light (shade...Read complete review

    This lens is the master of Bokeh.

    Beautiful tack sharp images with a bokeh background can be achieved with a bit of manual focusing.

    In low light (shade and indoors) the lens produces amazing pictures without the use of a flash.

    One of the fastest lenses I have ever used, action shoots can be frozen in time with ease.

    This lens lives on my Pentax K20D and never fails to impress me.

    The only reason I gave it 4 stars instead of 5 was that it does need a small bit of assistance with focusing from time to time and it is heavy... but worth it!

    VS

    Most Liked Negative Review

     

    Marvellous Lens with horrible focus

    The lens has a wonderful bokeh and the colours are beautiful - but it has a bitter downside: The lens focused approximately 1/2 inch in front of the object (nearly too much for...Read complete review

    The lens has a wonderful bokeh and the colours are beautiful - but it has a bitter downside: The lens focused approximately 1/2 inch in front of the object (nearly too much for the camera - K20D - to compensate). Now it's on the way to SIGMA - and I expect them to fix it.
    Some positive sides: The HSM is very fast, and you need nearly no light to make brilliant pictures. Also due to its full-frame compatibility there is barely any vignetting on APS/C cameras.
    I would nevertheless recommend the lens - but be aware you might have the same problem to get solved...

    Reviewed by 21 customers

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    Displaying reviews 1-20

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    4.0

    I will buy every time lenses from Sigma!

    By BRV Pentax shooter

    from philippines

    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

      Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

      great and excellent product from Sigma!

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      So far so very good ...

      By Hawki

      from Extreme Northern California

      About Me Photo Enthusiast

      Verified Reviewer

      Pros

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

      Cons

        Best Uses

        • Indoors/Low Light
        • Weddings/Events

        Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

        After reading all of professional and user reviews about potential focus issues, I hesitated over this purchase. Knowing that buying from B&H also meant proper support, I decided to pull the trigger ... Boy, am I glad I did.
        I spent the first hour testing the lens against my F50 f1.7, checked front/back focusing (now set to -2) and checked sharpness at all apertures.
        The lens passed all tests with flying colors, it met or exceed my expectations. I also love the hyper-sonic focusing ... I find it very quiet, fast and so far, very accurate.
        On my K20d with grip, it feels perfect ... one of the few lenses I've used that the balance just feels right.
        I also like the new finish much more than the old EX finish from Sigma.
        This lens is a definite keeper that is sure to become the lens I leave on the body.

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        Replaced 50mm

        By HarrisonW

        from London, ON

        About Me Photography Student

        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
          • Sports/Action
          • Weddings/Events

          Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

          New replaced lens from B&H is 100% in focus. It is so sharp I am shocked. Takes great photos! Thanks alot!

          • Was this a gift?:
          • No

          Share this review

           
          4.0

          Product being replaced

          By HarrisonW

          from London, ON

          About Me Photography Student

          Verified Reviewer

          Pros

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

          Cons

          • Blurry Focus

          Best Uses

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

          Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

          I used this lens for portrait shots. I have taken a few that are perfectly in focus however close objects at 1.8-1.4 are not in focus(front focus). So i have chosen to replace it with a new one. B&H has great customer service, no questions asked! The lens feels great on my K3. Well balanced and is a great size. The throw on manual focus is rather short so shooting in AF mode is almost essencial. I would recommend this to anyone shooting pentax, its a far better build than my pentax lenses.

          • Was this a gift?:
          • No

          Share this review

           
          5.0

          Fast & Sharp

          By Frattofoto

          from New Jersey

          About Me Photo Enthusiast

          Verified Buyer

          Pros

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

          Cons

          • Heavy

          Best Uses

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

          Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

          I sold my Pentax 50 to get this lens. I find the Sigma much sharper wide open than the Pentax. Lens is heavy for a 50 but I personally I like heavier lenses. Wonderful bokeh. I find the focus to be very fast and quiet. I also like the longer warranty.

          Share this review

           
          4.0

          value for the cost

          By banjo man

          from saranac lake, ny

          About Me Photography Student

          Verified Buyer

          Pros

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

          Cons

            Best Uses

            • Landscape/Scenery
            • Wildlife Photos

            Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

            ease of use, cost of product, fully automatic and nice features

            • Was this a gift?:
            • Yes

            Share this review

             
            5.0

            This is a great lens for the price,

            By DUBCITYMAN

            from LANCASTER CA.

            About Me Pro Photographer

            Verified Buyer

            Pros

            • Durable
            • Fast / accurate auto-focus
            • Nice Bokeh

            Cons

            • Heavy

            Best Uses

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

            Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

            Iknow it is heavy for the size but you have to consider the motor that maks it work for auto focusing.Classie lens.Sigma is a great lens,that's all I have.It is easy to use & sharp focus.It great for shallow dof that's what I bought it for.

            • Was this a gift?:
            • No

            Share this review

            (2 of 2 customers found this review helpful)

             
            5.0

            Must have lens as a wedding photographer

            By Agent 007

            from Summerville, SC

            About Me Semi-pro Photographer

            Verified Reviewer

            Pros

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

            Cons

              Best Uses

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

              Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

              I'm a wedding photographer and I also shoot other events. Outstanding performance in low light. At 1.4 is a little soft but its very manageable. The optimal aperture is 2.2 and very sharp at 2.8. No signs of vignetting. Very quiet and fast focusing. At the optimal apertures, the images are razor sharp. Haven't found a dislikes yet.

              • Was this a gift?:
              • No

              Share this review

               
              5.0

              I found my perfect combination.

              By Todd

              from Monson, MA

              About Me Photo Enthusiast

              Verified Buyer

              Pros

              • Low Light

              Cons

                Best Uses

                • Indoors/Low Light

                Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                You can read other reviews about autofocus speed, sharp images and color rendition. I wanted a system that would take photos indoors without a flash. Pair this lens with the Pentax K-5 and it does a wonderful job at it. I am able to take pictures of birthdays, holidays, new babies in the family all without a flash. I absolutely love it.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                Excellent Lens!

                By ANC Photos

                from Tampa, Florida

                About Me Semi-pro Photographer

                Verified Buyer

                Pros

                • Consistent Output
                • Fast / accurate auto-focus
                • Nice Bokeh

                Cons

                • NONE

                Best Uses

                • Indoors/Low Light
                • Weddings/Events

                Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                I have been using the Sigma f/1.4 EX DG HSM on both a Pentax K20D and K-5 with excellent results. I keep the aperture at 1.4 and adjust the shutter accordingly. As a portrait photographer, this lens is a must have. Being able to get crisp eyes while softening the nose and lips with the best bokeh around.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                Awesome!

                By JenSinPhoto

                from Glen Allen, VA

                About Me Pro Photographer

                Verified Buyer

                Pros

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

                Cons

                  Best Uses

                  • Indoors/Low Light
                  • Weddings/Events

                  Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                  I love this lens! It's great in low-light situations and creates great images!

                  • Was this a gift?:
                  • No

                  Share this review

                  (3 of 4 customers found this review helpful)

                   
                  5.0

                  eye-glass (f1.4)

                  By jackero27

                  from south africa

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

                  • Consistent Output
                  • Durable
                  • Fast / accurate auto-focus
                  • Nice Bokeh
                  • Serious lens

                  Cons

                  • The photographer's eye

                  Best Uses

                  • Portrait landscapes

                  Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                  i know know, after buying loads of gear, over years, that the most important product in my bag (so to speak) is the photographer's eye. much more so than the sensor or the ISO setting or the ergonomic body. and after that - and a long way after that - comes the glass. the camera's eye. the sigma f/1.4 is the best prime i ever had for my pentax cameras. it's fast and sharp and serious, many things which i am not. it is a great lens. period.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  Love This Lens!

                  By Trish

                  from Lake Gaston, Va

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

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

                  Cons

                    Best Uses

                    • Indoors/Low Light
                    • Landscape/Scenery
                    • Portraits

                    Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                    I really enjoy this lens! I've been wanting a 50mm prime, and I had purchased another Sigma lens and love everything about Sigma. It's a joy to photograph with. It is a bit heavy, but I don't mind that at all. It has such a solid feel to it, and I like that.

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    4.0

                    Formidable nifty fifty

                    By Johan

                    from Vancouver, BC

                    About Me Casual Photographer

                    Verified Buyer

                    Pros

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

                    Cons

                      Best Uses

                      • Night Photography
                      • Portraits

                      Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                      Use this lens mostly for portraits. My copy seems to front focus quite a bit wide open. I have the K-5 AF adjustment set at maximum -10 which almost solves the issue (still ~2mm BF). I haven't found that to be an issue so far in real world shooting. Also, that's pretty negligible when stepped down.

                      The lens had some raving reviews which may have affected my expectations for its sharpness at f1.4. Plenty usable in my opinion. But I stick with 2.8 and up.

                      I love the weight and the size of the lens. Gives me better balance and grip on my K-5. It's a sharp lens, with a quiet operation. Bokeh is pleasing.

                      4 stars because of the BF, large filter thread, no weather sealing.

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      3.0

                      Marvellous Lens with horrible focus

                      By 13thlife

                      from Switzerland

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

                      • Nice Bokeh

                      Cons

                      • Bad Focus
                      • Heavy

                      Best Uses

                      • Indoors/Low Light
                      • Night Photography
                      • Portraits

                      Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                      The lens has a wonderful bokeh and the colours are beautiful - but it has a bitter downside: The lens focused approximately 1/2 inch in front of the object (nearly too much for the camera - K20D - to compensate). Now it's on the way to SIGMA - and I expect them to fix it.
                      Some positive sides: The HSM is very fast, and you need nearly no light to make brilliant pictures. Also due to its full-frame compatibility there is barely any vignetting on APS/C cameras.
                      I would nevertheless recommend the lens - but be aware you might have the same problem to get solved...

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      4.0

                      Great lens for the price

                      By Big Joe G

                      from Rockland New York

                      About Me Semi-pro Photographer

                      Verified Buyer

                      Pros

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

                      Cons

                      • Heavy

                      Best Uses

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

                      Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                      First off it's a solid lens, a bit heavy but it takes a beating. Fast focus and quiet. I use it with k20 and I am very happy with the results. A must for low light photography.

                      • Was this a gift?:
                      • No

                      Share this review

                       
                      5.0

                      Excellent lens !

                      By Bigsaint

                      from Vernon, NJ

                      About Me Semi-pro Photographer

                      Verified Buyer

                      Pros

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

                      Cons

                        Best Uses

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

                        Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                        Don't hesitate if you are considering this lens. Beautiful build, excellent IQ I have zero regrets with my purchase. I just spent a Sunday afternoon catching the last of the fall colors with my K7 and this lens, the results were superb in every regard.

                        Share this review

                        (1 of 1 customers found this review helpful)

                         
                        5.0

                        incredible bokeh!!

                        By Cap

                        from NY

                        About Me Photo Enthusiast

                        Verified Buyer

                        Pros

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

                        Cons

                        • Heavy

                        Best Uses

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

                        Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                        I have had this lens a little over a month.

                        First let me say, that this was my first non-kit lens.. my friends were right, the quality of a standalone lens is far superior. So this may shade my review a bit. However, I did plenty of research prior to my purchase online. I considered the similar, but more expensive Pentax 55mm, but was sold by the Sigma's reported consistent focus.

                        I have been very satisfied: this lens is absolutely great for low light, or portraiture, requiring large apertures. I shoot with a Pentax k-x, non full-frame, and so the focal length is closer to 85 mm, perfect for portraits. However, I have not taken this lens off of my camera since getting it - it is a great "walkaround," versatile for many situations.

                        The only con I have seen from others is it's weight - it hasn't been an issue for me. Feels secure and doesn't at all affect image quality or tripod stability.

                        Share this review

                         
                        5.0

                        Very solid Lense

                        By PhotoAlaska

                        from Anchorage, AK

                        About Me Photo Enthusiast

                        Verified Buyer

                        Pros

                        • Sharp Focus
                        • Strong Construction

                        Cons

                        • Heavy

                        Best Uses

                        • Night Photography
                        • Portraits

                        Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                        Very quiet, clear pictures

                        Share this review

                        (3 of 3 customers found this review helpful)

                         
                        4.0

                        Bokeh Master

                        By A.W.

                        from Trinidad and Tobago

                        About Me Hobbyist/Enthusiast

                        Verified Reviewer

                        Pros

                        • Durable
                        • Rugged
                        • Sharp Focus
                        • Strong Construction

                        Cons

                        • Heavy
                        • Slow Focus

                        Best Uses

                        • Night Photography
                        • Special Effects

                        Comments about Sigma Normal 50mm f/1.4 EX DG HSM Autofocus Lens for Pentax AF:

                        This lens is the master of Bokeh.

                        Beautiful tack sharp images with a bokeh background can be achieved with a bit of manual focusing.

                        In low light (shade and indoors) the lens produces amazing pictures without the use of a flash.

                        One of the fastest lenses I have ever used, action shoots can be frozen in time with ease.

                        This lens lives on my Pentax K20D and never fails to impress me.

                        The only reason I gave it 4 stars instead of 5 was that it does need a small bit of assistance with focusing from time to time and it is heavy... but worth it!

                        Share this review

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