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Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens

You Pay: $1,196.95
Product Highlights
  • Standard Lens Equivalent to 43.5mm
  • Dustproof and Weather-Resistant
  • Aero Bright Coating to Prevent Flare
  • Rounded Diaphragm for Beautiful Bokeh
  • Smooth, Quiet SDM Autofocus
  • SP Coating Blocks Dust and Dirt
  • Advanced Focus Options

New camera, new lens: this Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens is the first model of the Pentax-D FA 645 lens series created for the Pentax 645D digital medium-format camera. With a focal length that's equivalent to a 43.5mm standard lens (in 35mm), it features optics optimized for digital photography to assure exceptional performance, and also provides an image circle covering the image area of existing 645-format film SLR cameras. It has dependable, dust-proof, weather-resistant construction for active outdoor photography.

This lens features a Supersonic Direct-drive Motor (SDM) autofocus drive and Quick-Shift for instant autofocus/manual focus switching,  Aero Bright coating to help prevent flare and ghost images, and it's Pentax's first 645 system lens to incorporate a rounded diaphragm for improved bokeh (the aesthetic quality of the blur in the out-of-focus areas of an image).

State-of-the-Art Optics
Incorporating high-performance, hybrid aspherical optical element in its optics, this new standard lens (focal length equivalent to 43.5mm in the 35mm format) offers exceptional image-resolving power with outstanding brightness levels even at the edges, while compensating various aberrations to a minimum. All lens characteristics are optimized for digital photography: for instance, flare and ghost images are minimized by applying exclusive lens coatings to optical elements and employing anti-reflection materials for the interior of the lens barrel.
Versatile Standard Lens
When mounted on the PENTAX 645D camera body, this standard lens offers a focal length which produces an angle of view close to that of the human eye. As the result, it can be used for many different kinds of subjects and applications, including landscapes and portraits.
Dustproof, Weather-Resistant Construction
Seven special seals make this lens dustproof and weather-resistant. This lens coupled with the Pentax 645D camera body provides a durable, reliable digital SLR camera that performs superbly, even in rain, mist, or locations prone to water splashes and spray. The "AW" (All Weather) designation in the lens name testifies to the weather-resistant construction.
Aero Bright Coating Dramatically Improves Image Description in Backlight
The Pentax original Aero Bright coating on this lens delivers brilliant, high-quality images by preventing flare and ghost images more effectively. This exclusive coating effectively reduces lens reflectance and greatly increases light transmittance by forming a silica aerogel layer with uniform pores on the surface of optical element.
Rounded Diaphragm to Produce a Beautiful Bokeh
The first Pentax medium-format interchangeable lens to feature a completely rounded diaphragm, it creates a natural, beautiful "bokeh" (out-of-focus rendition), while minimizing the streaking effect of point light sources.
Smooth, Quiet SDM Autofocus
The SDM (Supersonic Direct-drive Motor) autofocus mechanism operates smoothly and quietly using the supersonic motor installed inside the lens barrel.
SP Coating Blocks Dust and Dirt
The front surface of the lens is treated with Pentax's SP (Special Protect) coating, which applies a fluorine compound to the lens surface through a vapor deposition process. This SP coating effectively repels dust, water and grease, and also makes it easy to wipe off fingerprints and cosmetics.
Advanced Focus Options
Quick-Shift Focus system instantly switches to manual focus operation, after the subject is captured in focus by the AF system.
Focal Length 55 mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Pentax 645
Angle of View @ Infinity 65°
Minimum Focus Distance 1.64' (49.99 cm)
Diaphragm Blades 9
Elements/Groups 9/7
Magnification 0.17x
DOF Scale Yes
Distance Scale Yes
PC Outlet No
Autofocus Yes
Tripod Collar No
Filter Thread Front: 67 mm
Weight 14.67 oz (416 g)
Dimensions Approx. 2.69 x 3.20" (68.2 x 81.3 mm)
Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens
  • Front and Rear Lens Caps
  • Lens Hood
  • 1-Year Limited Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens
     
    5.0

    (based on 3 reviews)

    Ratings Distribution

    • 5 Stars

       

      (3)

    • 4 Stars

       

      (0)

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    Reviewed by 3 customers

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    (2 of 2 customers found this review helpful)

     
    5.0

    Excellent wide normal lens

    By Hugo

    from Salt Lake City, Utah

    About Me Photo Enthusiast

    Pros

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

    Cons

      Best Uses

      • Indoors/Low Light
      • Landscape/Scenery

      Comments about Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens:

      This is a very nice wide normal for Pentax MF. It's sharp and focus is fast. I've not found any "softness". It's weather sealed and has a metal barrel.

      • Was this a gift?:
      • No

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      (6 of 6 customers found this review helpful)

       
      5.0

      Pentax-D FA 645 55mm F2.8 AL [IF] SDM AW

      By GJ Panorama

      from Salina, Kansas

      About Me Semi-pro Photographer

      See all my reviews

      Verified Buyer

      Pros

      • Consistent Output
      • Durable
      • Easily Interchangeable
      • Lightweight
      • Nice Bokeh
      • Rugged
      • Strong Construction

      Cons

        Best Uses

        • Landscape/Scenery
        • Night Photography

        Comments about Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens:

        This is the standard for the Pentax 645 D. It is sharp, has good contrast, and responds quickly to the auto focus. I have not noticed the soft corners that some reviewers have mentioned. The lens hood has a panel that can be removed to access filters. This is a nice feature.

        • Was this a gift?:
        • No

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        (12 of 15 customers found this review helpful)

         
        5.0

        Fantastic ergonomics, superb long exp

        By diglloyd

        from diglloyd[@]

        Verified Buyer

        Pros

        • Best ergonomics in MF
        • Superb Value
        • Very low noise sensor

        Cons

        • Choose lenses carefully

        Best Uses

        • Architecture
        • landscape
        • Portraits

        Comments about Pentax-D FA 645 55mm f/2.8 AL[IF] SDM AW Lens:

        If you want a ~40MP medium format camera, order the 645D right now, because it's the first medium format camera that does almost everything right. IMO the sensor is wonderful, especially for long exposures. And I really like shooting the 645D.

        As a bonus, for a relative pittance, you can buy a complete set of used lenses for the 645D, no small consideration compared to the other brands. As well as used Pentax 6X7 lenses on it with an adapter.

        For anyone serious about it, I'd recommend two bodies to cover the bases of reliability and minimizing the need to switch lenses. The whole shebang will still cost a lot less than the Leica S2 with one lens, and I think the 645D has a better sensor.

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        Filters & Filter Kits

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        Tiffen -  67mm UV Protector Filter
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        Carry, store, and protect all your equipment with a Wrap or case.

        OP/TECH USA -  11" Soft Wrap (Forest Green)
        • You Pay: $10.95
         
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