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Sigma 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras

You Pay: $499.00
Product Highlights
  • Pentax K Mount Lens
  • Aperture Range: f/1.4 - 16
  • For APS-C Format Cameras
  • Standard Focal Length Prime Lens
  • Minimum Focus Distance: 11.8" (30 cm)
  • Hyper Sonic Motor for Smooth Autofocus
  • Thermally Stable Composite Material
  • Brass Bayonet Mount

The 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras from Sigma is a prime lens designed for Pentax APS-C format cameras. Its 35mm focal length equivalent is 45mm which places it in the category of standard focal length lenses. With its particularly fast maximum aperture of f/1.4, the lens will perform very well in low light situations and provides shallow depth of field focus. With updated optical configurations (9 elements in 8 groups), as well as rounded aperture blades, the lens delivers sharp detail and nice background bokeh. Its minimum focus distance is 11.8" (30 cm).

The lens’ optimized light distribution helps to minimize field curvature preventing a loss of image quality at the edges of photographs and its double-sided aspherical lens element minimizes spherical distortion. A rear focusing system combined with a newly developed autofocus algorithm and Hyper Sonic Motor provide smooth and accurate autofocus. Fulltime manual focus is also supported. 

Fast maximum aperture of f/1.4 allows fast shutter speeds for clear low-light imaging and shallow depth of field focus.
A Hyper Sonic Autofocus Motor (HSM) offers fast, smooth and quiet autofocus.
Constructed with Thermally Stable Composite Material (TSC) which performs well in extreme temperatures, reducing the expansion and contraction of the internal lens barrel.
Performance
Focal Length 30mm
Comparable 35mm Focal Length: 45 mm
Aperture Maximum: f/1.4
Minimum: f/16
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Minimum Focus Distance 11.8" (29.97 cm)
Magnification 0.15x
Maximum Reproduction Ratio 1:6.8
Elements/Groups 9/8
Diaphragm Blades 9
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Physical
Filter Thread Front:62 mm
Dimensions (DxL) Approx. 2.91 x 2.48" (74 x 63 mm)
Weight 15.34 oz (435 g)
Sigma 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras
  • Front Lens Cap
  • Rear Lens Cap
  • Lens Hood
  • Carrying 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
    Sigma30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras
     
    4.3

    (based on 4 reviews)

    Ratings Distribution

    • 5 Stars

       

      (2)

    • 4 Stars

       

      (1)

    • 3 Stars

       

      (1)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    100%

    of respondents would recommend this to a friend.

    Pros

    • Durable (3)
    • Nice bokeh (3)
    • Strong construction (3)

    Cons

      Best Uses

      • Low light (4)
      • Night photography (3)
      • Video (3)
        • Was this a gift?:
        • No (4)

      Reviewed by 4 customers

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      Displaying reviews 1-4

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      5.0

      I just feels solid and high quality.

      By Martin Brossman

      from Raleigh NC

      About Me Casual Photographer

      Verified Reviewer

      Pros

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

      Cons

        Best Uses

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

        Comments about Sigma 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras:

        It is solid and I love the weight. I bought the Sony A77 for I wanted a camera that felt solid in my hands with some weight. This is a great match for that camera. Sharp, love the 1.4 for low light and getting pinpoint focus. Very silent and easy to switch to manual. When you switch to manual focus it tells my A77 so I don't have to turn the camera off auto like other 3rd party lenses which is a big plus to me. The focus grip seems to be in just the correct place. Very high value for the money! I highly recommend it. It also comes with a good case. It is NOT water resistant and says so clearly in the manual. Not a problem for the cost.

        • Was this a gift?:
        • No

        Share this review

         
        3.0

        Bad Purple Fringing

        By Haze

        from Knoxville, TN

        About Me Photo Enthusiast

        Verified Buyer

        Pros

        • Durable
        • Nice Bokeh
        • Strong Construction

        Cons

        • Heavy

        Best Uses

        • Indoors/Low Light
        • Night Photography
        • Video

        Comments about Sigma 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras:

        I bought this for my Pentax after having the 35mm f/1.4 art for my Canon. I thought I would save $400 buying the 30mm instead of the 35mm. This lens is sharp even wide open. The focus is fast and accurate despite other reviews I have read before my purchase. Build quality is solid. The hood that comes with it is a little bulky but does the job. I do have one big complaint. The Purple fringing is the worst I have ever seen. It is sever f/1.4-2 after about f/3.5 it goes away. But most people are buying this lens because it is f/1.4.

        • Was this a gift?:
        • No

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        (1 of 1 customers found this review helpful)

         
        5.0

        Superb lens for Pentax APS-C system

        By vivek

        from IL

        About Me Semi-pro Photographer

        Pros

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

        Cons

          Best Uses

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

          Comments about Sigma 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras:

          So I got this lens today. I put this to test and I have to say that the lens is simply sharp. Color rendition is superb. I am using it with Pentax K-01. Auto Focus is silent and fast (No, not OMD fast). Since my camera is mirror less, I don't have any focussing issues-period. Auto focus on Pentax K-01 using HSM works like a charm. I tried all my pictures in a 3 candle-lit environment simply to test the low light capability. No issues what so ever. Handled like a champ. One thing that I notices at f1.4 was purple fringing near very high contrast areas, such as white on black with light directed on that surface.In extreme cases, this was about .1mm thick. I removed this in Lightroom 5 with one click. Problem solved. The lens is very very sharp wide open. I tested all the way upto f2.8 and it remains very sharp. I am sure it is much sharper beyond that but I don't care beyond certain amount of sharpness. Bottom line is it is plenty sharp for most cases.

          • Was this a gift?:
          • No

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          (6 of 6 customers found this review helpful)

           
          4.0

          Pretty Impressed

          By str8rzr

          from Jacksonville FL

          About Me Photo Enthusiast

          Verified Reviewer

          Pros

          • Easily Interchangeable
          • Nice Bokeh

          Cons

          • Heavy

          Best Uses

          • Indoors/Low Light

          Comments about Sigma 30mm f/1.4 DC HSM Lens for Pentax DSLR Cameras:

          Not exactly small - in fact it is chunky, especially compared to the Pentax 31mm f/1.8 competitor. But f/1.4 performance is quite respectable (and infinitely better than the Pentax 31mm), f/2 is excellent and on par in peak center contrast with the 31mm f/1.8 @ f/2 (though that one's got better corners), and from f/2.8-8.0 sharpness is absolutely stellar and arguably the Pentax 31mm's equal. I've not yet heard the focusing action, which is quick. If the size and cost is not a detractor for you, you're unlikely to be disappointed.

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          • No

          Share this review

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