smc PENTAX DA 645 25mm F4 AL (IF) SDM AW

  • High performance, wide angle lens for 645D
  • Weather and dust sealed
  • PENTAX SDM autofocus

The DA 645 25mm F4 lens is a fast, wide angle lens designed specifically for use with the PENTAX 645D.  It features an advanced optical design tailored for digital photography, quiet SDM autofocus, and it's fully weather sealed for field use.



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smc PENTAX D FA 645 55mm F2.8 AL (IF) SDM AW

smc PENTAX D FA 645 55mm F2.8 AL (IF) SDM AW

  • High performance wide angle 645 lens.

  • Weather and dust sealed construction for safe and reliable operation in the field.

  • PENTAX Quick Shift focus system disengages AF motor for instant auto to manual focus switching.

  • Aero Bright coating minimizes aberrations while maximizing light transmission.

  • Focal length equivalent to 19.5mm (in 35mm format) when used with PENTAX 645D body (95 degree angle of view).

  • Inline filter tray for 40.5mm filter (lens curvature prevents front mounted filters).

  • PENTAX SDM autofocus system for accurate, quiet autofocus performance.

  • Rounded aperture blades for beautiful bokeh at open apertures.

  • PENTAX SP coating protects the lens from dust and oils making it easier to clean.

  • Developed specifically for the PENTAX 645 digital system.


PENTAX 645AF2 Bayonet

Angle Of View

95° on PENTAX 645D body

Number Of Diaphragm Blades


Minimum Focusing Distance

1.31’ (0.4m)

Maximum Magnification



36.7 oz (1040g)

Objective Cap

Lens Cap for DA 645 25mm

Lens Aperture Ring


Diaphragm Control

Fully Automatic


Quick-Shift Focus, Aero Bright Coating, SP (Super Protect) Coating, rounded aperture blades (F4-F8), Dustproof and Water Resistant, SDM focus only.

Lens Construction

12 elements, 8 groups



Minimum Aperture


Filter Diameter

40.5mm (inline filter, not front mount)


3.5x5.8” (90x148.5mm)


Lens Soft Case S100-200



Tripod Adapter


Focal Length

25mm (equiv 19.5mm in 35mm format when mounted to 645D)

  • Lens Cap For D FA 645 25mm
  • Lens Soft Case S100-200
  • Inline Lens Filter 40.5mm (C-PL)
  • Rear Lens Cap 645
  • Inline Lens Filter 40.5mm (Normal)


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