Pentax-D FA 100mm F2.8 WR Macro Review


The lens covers the full 24x36mm format, not just APS-C. The aperture blades are rounded, delivering a smoother bokeh which is important for a macro lens. However, unlike its predecessor, it has no aperture ring.

Rounded blades

The optical design is the tried-and-proven formula of the previous generation D FA 100mm F2.8 Macro lens, which in turn had inherited the optical design from the well-respected FA 100mm F2.8 and F 100mm F2.8 macro lenses introduced in 1991 and 1987, respectively. None of these earlier lenses had rounded aperture blades.

  • Lens mount: PENTAX KAF2
  • Optical construction: 9 elements in 8 groups
  • Aperture blades: 8 (rounded)
  • Diagonal angle of view (24x36mm format): 24.5 degrees
  • Diagonal angle of view (APS-C format): 16 degrees
  • Maximum aperture: F2.8
  • Minimum aperture: F32
  • Minimum focus distance: 0.303m
  • Minimum working distance: 0.13m
  • Filter size: 49mm
  • Maximum magnification: 1:1
  • Diameter x max. length: 65mm x 80.5mm*
  • Weight: 340g*
  • Cap Type: Clip-on
  • Lens hood: PH-RBE 49mm (included)
  • Hood type: Bayonet
  • Aperture ring: No
  • Tripod adapter: No
  • Diaphragm control: Fully automatic
  • Focal length: 100mm
  • Image circle: Covers the 24x36mm f0rmat

*Without hood. PentaxForums @PentaxForums News | Reviews | Forum

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