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

Pentax smc DA 50mm f/1.8 Lens

Price: $246.95
Instant Savings: $117.00
You Pay: $129.95
Product Highlights
  • Very Fast f/1.8 Maximum Aperture
  • Excellent Low-Light Lens
  • Pleasing Bokeh (Out-of-Focus Areas)
  • SP Coating Repels Dust, Water, Grease
  • For APS-C Digital K-Mount Cameras

The smc DA 50mm f/1.8 Lens from Pentax is a fast f/1.8 lens for cameras with a Pentax K mount. Mounted to a camera with an APS-C sensor, this lens gives an angle of view equivalent to a 76.5mm telephoto lens--ideal for portraits. The wide f/1.8 aperture makes this an essential lens for working in low light, and it also delivers beautiful bokeh (the out-of-focus portion of a photograph). This lightweight (4.3 oz) lens is very compact--just 1.5" (3.8 cm) long. The addition of Pentax Super Protect (SP) coating to the lens helps prevent dust, water, grease and other substances from attaching themselves to a lens and degrading image quality.

Very fast f/1.8 maximum aperture is ideal for low light situations and produces pleasing bokeh in the out-of-focus areas of a photograph
76.5mm telephoto equivalent in APS-C format
The lens is treated with the Pentax's original SP (Super Protect) coating, which repels dust, water, grease, and other substances that may adhere to the surface of the lens. The protective coating promotes trouble-free use in all kinds of shooting situations.
Performance
Focal Length 50mm
Comparable APS-C Focal Length: 76.5 mm
Aperture Maximum: f/1.8
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 31.5°
Minimum Focus Distance 1.48' (45.11 cm)
Magnification 0.15x
Elements/Groups 6/5
Diaphragm Blades 7
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread Front:52 mm
Dimensions (DxL) Approx. 2.5 x 1.5" (6.35 x 3.81 cm)
Weight 4.3 oz (122 g)
Pentax smc DA 50mm f/1.8 Lens
  • Front and Rear Lens Caps
  • 1-Year Limited Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Pentaxsmc DA 50mm f/1.8 Lens
     
    4.6

    (based on 90 reviews)

    Ratings Distribution

    • 5 Stars

       

      (61)

    • 4 Stars

       

      (25)

    • 3 Stars

       

      (4)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    96%

    of respondents would recommend this to a friend.

    Pros

    • Lightweight (73)
    • Nice bokeh (62)
    • Fast / accurate auto-focus (61)
    • Consistent output (46)
    • Easily interchangeable (41)

    Cons

    • Weak casing (10)
    • Plastic mount (6)
    • Slow focus (3)

    Best Uses

    • Low light (62)
    • Landscape/scenery (38)
    • Night photography (33)
    • Weddings (32)
    • Sports/action (11)
      • Reviewer Profile:
      • Photo enthusiast (44), Casual photographer (14), Semi-pro photographer (14), Pro photographer (6), Photography student (4)
      • Was this a gift?:
      • No (78)

    Most Liked Positive Review

     

    Great budget prime

    Bought this as the first prime lens for my new Pentax K-5 system. The first thing that struck me when I used it was how noisy the auto focus was. Guess years of...Read complete review

    Bought this as the first prime lens for my new Pentax K-5 system. The first thing that struck me when I used it was how noisy the auto focus was. Guess years of Canon USM has spoiled me. After that auditory shock though, it was all uphill. The focusing is spot on on my K-5, and it is sharp from wide-open as far as I can tell. The Bokeh is nice too - much better than the Canon EF 50 F/1.8. But then that lens is half the price!I like the build and the design of the lens... solid plastic and compact. The plastic mount doesn't bother me... but yeah for $ + one could expect a metal mount.But we are paying for the Pentax clarity and contrast...both of which are there in loads. I think the bigger decision for potential buyers should be this against the trusty Pentax FA 50 F/1.4. You can get used copies of the same for the cost of a new 50 F/1.8. I decided for the new 1.8 because I believe that technology becomes better with time. Why buy old when one can buy new? ;) So far - haven't been disappointed.

    VS

    Most Liked Negative Review

     

    Plastic Fantastic

    It is noticably soft wide open, so don't buy it for the speed. It's decent when stopped down to f2.8; by f5.6 it's as sharp as anything. Auto focus is VERY loud but...Read complete review

    It is noticably soft wide open, so don't buy it for the speed. It's decent when stopped down to f2.8; by f5.6 it's as sharp as anything. Auto focus is VERY loud but quick.

    The lens mount is plastic so I doubt it would stand up to heavy use. I honestly don't have a problem with the rest of the plastic. Structurally it seems sturdy enough, and plastic is probably more thermally stable than metal anyway. The mount though, should be a little tougher, in my opinion.

    This one was included with the K-3 by B&H, so I'm grateful to have it and it will see some use, but overall it isn't as good as other normal primes. I'd say it's worth having in the bag just because it weighs next to nothing.

    Reviewed by 90 customers

    Sort by

    Displaying reviews 1-20

    Back to top

    Previous | Next »

     
    5.0

    Great Value

    By zgulsby

    from Delaplane, VA

    About Me Photo Enthusiast

    Verified Reviewer

    Pros

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

    Cons

    • Loud Autofocus

    Best Uses

    • Indoors/Low Light
    • Landscape/Scenery

    Comments about Pentax smc DA 50mm f/1.8 Lens:

    This is the first lens I used with my K-3. I was entirely prepared to sell it off for the DA* 55, but I've been so pleasantly surprised by the output that I'm absolutely keeping it.

    I understand why some would complain about the somewhat loud AF and the plastic casing, but neither of those aspects are concerning to me.

    • Was this a gift?:
    • No

    Share this review

     
    5.0

    A budget portrait lens

    By KW

    from OH

    About Me Casual Photographer

    Verified Buyer

    Pros

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

    Cons

      Best Uses

      • Night Photography
      • Outdoors Portrait

      Comments about Pentax smc DA 50mm f/1.8 Lens:

      If you don't care about the plastic mount, it's a perfect outdoor portrait lens for non-professionals. Good sharpness and bokeh. Sometimes hunts in low light.

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      Awesome!

      By Geetea

      from Phoenix, AZ

      About Me Casual Photographer

      Verified Buyer

      Pros

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

      Cons

      • plastic mount

      Best Uses

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

      Comments about Pentax smc DA 50mm f/1.8 Lens:

      Lightweight, plastic, but with a quality feel. Excellent sharpness!

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      A nice lens, great addition to my K5-2S

      By Dave

      from Charlottesville, Virginia

      About Me Photo Enthusiast

      Verified Buyer

      Pros

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

      Cons

        Best Uses

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

        Comments about Pentax smc DA 50mm f/1.8 Lens:

        On a Pentax K5-2S. I like the lens. Not too heavy, focuses well.

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        Great lense

        By snowmonkey

        from utah

        Comments about Pentax smc DA 50mm f/1.8 Lens:

        This is my first DSLR lens. I am not a pro at all, I am just starting out. For me this lens is awesome and takes great pictures. I have no regrets to buying this lens.

        Share this review

         
        4.0

        Interesting but not impressive!

        By meyti

        from Denver, Co

        About Me Photo Enthusiast

        Verified Buyer

        Pros

        • Fast / accurate auto-focus
        • Lightweight

        Cons

          Best Uses

          • Indoors/Low Light

          Comments about Pentax smc DA 50mm f/1.8 Lens:

          This lens will improve your photography capacity in a low light environment. But don't get too excited. If you like portrait photography, then I would say this is a good choice. but if you want to shoot in a room, you would not have much space to cover a large area.
          Overall, with the price you pay for this lens, I evaluate it as a good choice. It is small and and light.

          • Was this a gift?:
          • No

          Share this review

           
          5.0

          smc DA 50mm f/1.8 Lens by Pentax

          By Dave

          from PA

          About Me Photo Enthusiast

          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

            Comments about Pentax smc DA 50mm f/1.8 Lens:

            The Pentax 50mm lens is used for taking pictures for sketches drawings.
            I like it because there is no distortion and everything looks normal.
            The drive motor on the lens is a little noisy but it doesn't matter for what it's being used for.

            • Was this a gift?:
            • No

            Share this review

             
            5.0

            good lenses

            By flash

            from richmond,va

            About Me Casual Photographer

            Verified Buyer

            Pros

            • Lightweight
            • Nice Bokeh

            Cons

              Best Uses

              • Indoors/Low Light
              • Sports/Action

              Comments about Pentax smc DA 50mm f/1.8 Lens:

              I use for indoor Sport,karate.

              • Was this a gift?:
              • No

              Share this review

              (1 of 1 customers found this review helpful)

               
              5.0

              Sharp, lightweight prime, Versatile.

              By nbriz

              from Kansas City, MO

              About Me Photo Enthusiast

              Verified Buyer

              Pros

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

              Cons

              • Plastic construction

              Best Uses

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

              Comments about Pentax smc DA 50mm f/1.8 Lens:

              Great lightweight, low light, sharp prime. Perfect for portraits, street shots, indoor shots. Definitely recommend it for Pentax users.

              • Was this a gift?:
              • No

              Share this review

               
              5.0

              excellent for the money

              By reeser

              from ct

              About Me Photo Enthusiast

              Verified Buyer

              Pros

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

              Cons

                Best Uses

                • Indoors/Low Light
                • Weddings/Events

                Comments about Pentax smc DA 50mm f/1.8 Lens:

                Good performance for the $. Build quality (plastic mount) seems to be adequate.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                great suprise

                By burntwood

                from ohio

                About Me Photo Enthusiast

                Pros

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

                Cons

                • Needs Better Mount

                Best Uses

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

                Comments about Pentax smc DA 50mm f/1.8 Lens:

                i couldn't believe the photo quality of this lenseespecially at the cost point. it would be almost impossible to find one better. but i'm sure the k-5IIs has a little to do with it. very happy.

                • Was this a gift?:
                • No

                Share this review

                (1 of 1 customers found this review helpful)

                 
                5.0

                High IQ and great value

                By wojtek

                from Portland, OR

                About Me Photo Enthusiast

                Verified Buyer

                Pros

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

                Cons

                • Weak Casing

                Best Uses

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

                Comments about Pentax smc DA 50mm f/1.8 Lens:

                Really nice, fast prime, with high IQ and great value, especially when bought in bundled (I got mine with K5IIs). Soft wide open, but really sharp across the frame at f/5.6, focus is noisy but that's about only con i can find.

                • Was this a gift?:
                • No

                Share this review

                (1 of 1 customers found this review helpful)

                 
                5.0

                This is a Great Lens

                By Wayne the shutter bug

                from Smithfield, RI

                About Me Photo Enthusiast

                Verified Buyer

                Pros

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

                Cons

                  Best Uses

                  • Indoors/Low Light
                  • Landscape/Scenery

                  Comments about Pentax smc DA 50mm f/1.8 Lens:

                  I have used this lens indoors and outdoors with and without flash and with varying depths of fields. The lens handles it all.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  4.0

                  Thank you b and h

                  By Don

                  from El Paso Texas

                  Comments about Pentax smc DA 50mm f/1.8 Lens:

                  Excellent Well recommended product

                  Share this review

                   
                  5.0

                  Must have.

                  By JGreen

                  from Houston, TX

                  Comments about Pentax smc DA 50mm f/1.8 Lens:

                  Great lens. Definitely a must have for you arsenal of lenses.

                  Share this review

                   
                  4.0

                  Great

                  By Moseley

                  from NC

                  Comments about Pentax smc DA 50mm f/1.8 Lens:

                  Read the reviews, and this lense is as described. Accurate, great for the price, and a tad noisy. Love it.

                  Share this review

                   
                  5.0

                  Very good prime lens

                  By Steven

                  from Madison, Wisconsin

                  Comments about Pentax smc DA 50mm f/1.8 Lens:

                  No problems, easy to use, weather sealing a nice feature!

                  Share this review

                   
                  5.0

                  Not too bad

                  By JJ

                  from New Jersey

                  About Me Casual Photographer

                  Verified Buyer

                  Pros

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

                  Cons

                    Best Uses

                      Comments about Pentax smc DA 50mm f/1.8 Lens:

                      This is a great fixed lens. I bought it because the aperture goes as large as f1.8 and because it was on sale. I could probably benefit from a wider angle lens but I went for the larger aperture.

                      • Was this a gift?:
                      • No

                      Share this review

                      (0 of 1 customers found this review helpful)

                       
                      4.0

                      Multi perpuse lens.

                      By Al

                      from New Jersey

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

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

                      Cons

                        Best Uses

                        • Landscape/Scenery
                        • Weddings/Events
                        • Wildlife Photos

                        Comments about Pentax smc DA 50mm f/1.8 Lens:

                        Best results for me. Indoors or outdoors great pictures. Focus and automatic features all work well.

                        Recommend a 50 mm lens for basic primary picture taking.

                        • Was this a gift?:
                        • No

                        Share this review

                        (4 of 5 customers found this review helpful)

                         
                        5.0

                        The best of the Nifty 50s

                        By RagmanJin

                        from Drumheller, AB, CAN

                        About Me Pro Photographer

                        Verified Buyer

                        Pros

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

                        Cons

                          Best Uses

                          • Indoors/Low Light
                          • Night Photography
                          • Portraits
                          • Sports/Action
                          • Video
                          • Weddings/Events

                          Comments about Pentax smc DA 50mm f/1.8 Lens:

                          Side-by-side with the Canon 1.8/50, the Pentax blows it out of the water. Sharp as a syringe where you need it, creamy bokehliciousness where you don't. Beautiful colour rendition and very difficult to produce any ghosting or flare problems. Perfect for portraits.
                          Everyone needs one of these in their bag — it won't take up much space.

                          • Was this a gift?:
                          • No

                          Share this review

                          Displaying reviews 1-20

                          Back to top

                          Previous | Next »

                          Filters & Filter Kits

                          Show more >
                          Hoya -  52mm alpha MC UV Filter
                          • You Pay: $15.90
                           
                          Hoya -  52mm alpha Circular Polarizer Filter
                          • You Pay: $27.90
                           

                          Filter Holders

                          Cokin -  "P" Series - Filter Holder, 58mm Adapter Ring and 28-Page Pamphlet
                          • You Pay: $17.95
                           

                          Hoods & Covers

                          Show more >
                          Vello -  52mm Snap-on Tulip Lens Hood (Version II)
                          • You Pay: $14.95
                           

                          Cases & Wraps

                          Show more >
                          Pearstone -  Onyx 20 Lens Case
                          • You Pay: $11.99
                           

                          Lens Mount Caps

                          Show more >
                          Sensei -  52mm Screw-In Metal Lens Cap
                          • You Pay: $6.95
                           
                          View all Accessories
                          See any errors on this page? Let us know.

                          Close

                          Close

                          Close