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Questions & Answers

Craig D : Can this lens be used on Pentax 645N II body?John C : I have both a 645Z and a 645 N II. There is no autofocus or aperture control when using this lens on the film camera. Best stick with the 645 FA45mm if you need wide angle.
Shopper : Does this lens works well with the 645z?FREDERICK J : It works great with my Z.TRACY K : I have the 645D & have had no issues with it. It's very sharp & not that large or heavy on the big camera. I'm usually on a tripod but not above hand holding it @ f7.1 or 8 & using the native 200 ISO (I use the extended 100 ISO for tripod shots.) It should work equally well on the 645Z, plus the extra 10MP can't hurt.
JAMES S : Is this lens a focal plane lens or a leaf shutter type lens?ANDREW R : I believe that the Pentax 645D uses a focal plane shutter.

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Pentax 55mm F/2.8 Specifications

  • Lens Mount

    PENTAX 645 AF2

  • Focal Length

    55mm (equiv 34-43.5mm in 35mm format)

  • Aperture

    F3.5-5.6

  • Min. Aperture

    F22

  • Max. Aperture

    F2.8

  • Lens Construction

    9 elements in 7 groups

  • Angle of View

    53-65 degree

  • Min. Focusing Distance

    1.64' (0.5m)

  • Max. Magnification

    0.17X

  • Filter Diameter

    67mm

  • Diaphragm Control

    Fully Automatic

  • Number of Aperture Blades

    7

  • Hood

    PH-RBN 67mm

  • Objective Cap

    O-LC62 62mm

  • Case

    S100-120

  • Maximum Diameter & Minimum Length

    81.3mm x 68.2mm (3.2 inch x 2.7 inch)

  • Weight

    Without Hood: 14.7 oz. (416g)
    With Hood: 16.3 oz. (463g)

  • UPC Code

    027075166059

4 Accessories for Pentax Pentax-D FA 645 55mm f/2.8 AL IF SDM AW Lens

  • All Accessories (4)
  • Filters (1)
  • Bags & Cases (1)
  • Cleaning Accessories (2)

About Pentax 55mm F/2.8

Developed as the first model of the PENTAX-D FA 645 lens series, the Pentax smc D FA 645 55mm f/2.8 AL [IF] SDM AW not only features optics optimized for high-quality digital photography to assure exceptional image-description performance, but also provides an image circle covering the image area of existing 645-format film SLR cameras.

This unifocal standard lens also comes with a dependable, dust-proof, weather-resistant construction for active outdoor photography.

Pentax 55mm F/2.8 Features

  • Fixed 55mm standard-length focal length lens
  • PENTAX 645 AF2 bayonet mount can be used on older PENTAX film 645 bodies
  • Advanced optical design, including lens curvature and optical coatings, is optimized for the exacting needs of digital photographic sensors
  • Quiet SDM autofocus motor provides fast and accurate autofocus operation
  • Fully weather-sealed design works with the 645D weather-sealed body for maximum reliability in the field
  • Fast F2.8 maximum aperture allows outstanding depth of field control, while maximizing shutter speeds for existing light photography
  • Curved aperture blades provide a circular aperture at F5.6 for extremely smooth image bokeh
  • PENTAX Quick-Shift autofocus system instantly shifts from auto to manual focus for on-the-fly focus accuracy

Key Features

  • Fixed 55mm standard-length focal length lens
  • PENTAX 645 AF2 bayonet mount can be used on older PENTAX film 645 bodies
  • Quiet SDM autofocus motor provides fast and accurate autofocus operation

What's in the box:

  • Pentax 645D FA 55 mm F2.8 AL [IF] SDM AW Lens
  • Lens Hood
  • Front Lens Cap
  • Rear Lens Cap
  • S100-120 Case
  • Pentax Warranty

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