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Pentax smc DA 50mm f/1.8 Lens

Price: $246.95
Instant Savings: $116.95
You Pay: $130.00
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 83 reviews)

    Ratings Distribution

    • 5 Stars

       

      (54)

    • 4 Stars

       

      (24)

    • 3 Stars

       

      (5)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    96%

    of respondents would recommend this to a friend.

    Pros

    • Lightweight (66)
    • Nice bokeh (57)
    • Fast / accurate auto-focus (56)
    • Consistent output (44)
    • Easily interchangeable (39)

    Cons

    • Weak casing (10)
    • Plastic mount (5)
    • Slow focus (3)

    Best Uses

    • Low light (56)
    • Landscape/scenery (35)
    • Weddings (31)
    • Night photography (30)
    • Sports/action (8)
      • Reviewer Profile:
      • Photo enthusiast (41), Semi-pro photographer (14), Casual photographer (11), Pro photographer (6), Photography student (4)
      • Was this a gift?:
      • No (72)

    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 83 customers

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    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

       
      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

       
      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

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        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

        (0 of 2 customers found this review helpful)

         
        3.0

        Lens is new but at moment I am not sure.

        By Dick

        from Chicago, IL

        About Me Photo Enthusiast

        Verified Buyer

        Pros

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

        Cons

        • None Of Your Cons Apply T

        Best Uses

        • Landscape/Scenery
        • Wildlife Photos

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

        I just purchased this lens and have only experimented with it twice but at moment I am not so happy. First pictures came out all blue. Second try produced less then very ordinary shots. However I think that I am too new to post anything negative and please allow me a bit more time to experiment some more. I only purchased this lens because I was led to understand that prime lenses produced sharper images but like I say I think I am too early to really post my results for your next customer. Hopefully this coming Thursday I will be able to get out and try again. Supposed to be a nice decent fall day in Chicago and anxious to use this lens.

        • Was this a gift?:
        • No

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        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

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              (2 of 2 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

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                5.0

                Great Lens

                By Sam

                from Boston, MA

                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 Pentax smc DA 50mm f/1.8 Lens:

                  I highly recommend having this lens with you at all times. This lens is awesome, especially for the price. Takes awesome images with nice bokeh. Have this lens on my camera (K-5iis) nearly all the time.

                  • Was this a gift?:
                  • No

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                  5.0

                  Beautiful and sharp photos

                  By Audrey

                  from KY

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

                  I love this lens, and it is my favorite. It takes very clear and sharp and colorful photos. Lens of choice. I recommend it!!

                  Share this review

                   
                  5.0

                  Gem Of A Lens

                  By Rick the Click

                  from Tallahassee, FL

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

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

                  Cons

                    Best Uses

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

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

                    This small lens weighs little and is bright and sharp. I find this lens a joy to use. Focus makes
                    just a slight sound and is fairly quick. If you are
                    going Pentax, this is a good one to have in your bag. Absolutely no kidding, I LIKE THIS LENS!

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    4.0

                    the value proposition

                    By Pentax fan

                    from Atlanta, GA

                    About Me Photo Enthusiast

                    Verified Buyer

                    Pros

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

                    Cons

                      Best Uses

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

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

                      this is a plastic lens (except for the glass obviously) but is well made and exudes quality. very sharp, able to render nice out of focus regions, fast AF (if a bit noisy but not objectionable). I'm glad i got it, especially bundled with a K5iis for $[$]which is a screaming bargain.

                      • Was this a gift?:
                      • No

                      Share this review

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      Excellent Lens for the price

                      By Nathan

                      from Stanford, CA

                      About Me Photography Student

                      Verified Buyer

                      Pros

                      • Consistent Output
                      • Easily Interchangeable

                      Cons

                      • plastic mount
                      • Screw Drive

                      Best Uses

                      • Indoors/Low Light
                      • Portraiture

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

                      For the price, this is an excellent lens, though I would've preferred to see an internal motor rather than the screw-drive. The plastic mount shouldn't push you away unless you're planning on ripping it from your camera; in which case I think you have bigger problems to deal with.

                      • Was this a gift?:
                      • No

                      Share this review

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      Value beyond the realm

                      By Brendan

                      from Portland, OR

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

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

                      Cons

                        Best Uses

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

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

                        It's rare to find values like this lens these days. I spent hours researching which prime lenses I would order along with my K-5iis and K-50. After reading many reviews, I came across the DxO Mark ratings for best lenses for the K-5iis. The DA 50mm 1.8 is in the top 3. The 35mm DA L F2.4 is right up there too. Sold! Yes, they are noisy, and they have a plastic mounting ring, but they feel well made for what they are. The quality of the images they produce, are far and beyond the realm that their price conveys.

                        • Was this a gift?:
                        • No

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                        4.0

                        Fast Little Lens

                        By Dave

                        from Ft. Myers, FL. Gloucester, MA.

                        About Me Semi-pro Photographer

                        Verified Buyer

                        Pros

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

                        Cons

                          Best Uses

                          • Indoors/Low Light
                          • Landscape/Scenery

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

                          This lens is compact and sharp. It's considerably smaller than my old SMC Pentax 50mm f1.4. But then I have a number of f 2.8 zooms that cover that focal length and so don't use a fixed focal length very often. My only complaint, and it doesn't matter that often, is that the focusing motor is noisy.

                          • Was this a gift?:
                          • No

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