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Sigma 4.5mm f/2.8 EX DC HSM Lens for Pentax Digital SLR USA

You Pay: $899.00
Product Highlights
  • Circular Fisheye

The Sigma 4.5mm f/2.8 EX DC HSM Lens is a spherical fisheye lens that easily captures a full 180° view in all directions, in a circular image. Even the most familiar and mundane of subjects can be portrayed with startlingly fresh new expressions through exaggerated perspectives and unusual distortion effects. It is also well suited for academic and technical measurements, such as solid angle measurements, cloud cover measurements & virtual reality. 

Having the HSM (Hyper Sonic Motor) incorporated into this lens allows for focusing to be quieter and more responsive. This lens provides the equivalent focal range of approx. 6.75mm when used with a Pentax digital SLR camera (*).

DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is made to match the smaller dimensions used for the image sensor on digital cameras. As a result these lenses are also more compact and lightweight, and are better matched to digital SLR cameras.

Note! (*) Not suitable for 35mm film SLR cameras or for any digital SLR camera with image sensor bigger than APS-C size

The EX lens series denotes excellence of engineering and new technology
Super Multi Layer (SML) coating reduces ghost and flare
Special Low Dispersion (SLD) glass provides effective compensation of chromatic aberration
The HSM (Hyper Sonic Motor) ensures fast and quiet autofocusing and allows full-time manual focus override by rotation of the focus ring
Performance
Focal Length 4.5mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 180°
Minimum Focus Distance 5.3" (13.46 cm)
Magnification 0.16x
Maximum Reproduction Ratio 1:6
Elements/Groups 13/9
Diaphragm Blades 6
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread None
Dimensions (DxL) Approx. 3.0 x 3.1" (7.62 x 7.87 cm)
Weight 1.03 lb (470 g)
Sigma 4.5mm f/2.8 EX DC HSM Lens for Pentax Digital SLR
  • Front & Rear Lens Caps
  • 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
    Sigma4.5mm f/2.8 EX DC HSM Lens for Pentax Digital SLR
     
    5.0

    (based on 1 review)

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    Reviewed by 1 customer

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    (5 of 5 customers found this review helpful)

     
    5.0

    At last a circular fisheye!

    By Rich the fish

    from Neenah WI

    About Me Photo Enthusiast

    Verified Buyer

    Pros

      Cons

        Best Uses

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

        Comments about Sigma 4.5mm f/2.8 EX DC HSM Lens for Pentax Digital SLR:

        I use this lens to create stunning and unique
        photographs. It is optically sharp and extremely
        well made. Use a horizontal rail attachment to
        place the vertical plane of the lens beyond your
        tripod legs. So far, I am totally satisfied with
        this product, it performs well on my K-10 & K-20
        bodies.

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        • No

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