Pentax HD FA 31mm f/1.8 Limited Lens

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  • Pentax HD FA 31mm f/1.8 Limited Lens

Product options:

  • K-Mount Lens/Full-Frame Format
  • Aperture Range: f/1.8 to f/22
  • High-Grade PENTAX HD Multi-Layer Coating
  • 9 Elements in 7 Groups
  • Super Protect SP Coating
  • 9-Blade Round Diaphragm
  • Integrated Lens Hood
  • Compact Form Factor

Focal Length

31mm
Equivalent to 47.5mm in 35mm format
(when attached to PENTAX APS-C size DSLR cameras)

Maximum Aperture

F1.8

Minimum Aperture

F22

Lens Construction

9 elements in 7 groups

Angle of View (Diagonal)

70°(when attached to PENTAX 35mm full-frame SLR cameras)
49°(when attached to PENTAX APS-C size DSLR cameras)

Mount

KAF

Minimum Focusing Distance

0.3m (0.98ft.)

Maximum Magnification

0.16x

Filter Diameter

58mm

Diaphragm Control

Fully automatic

Number of Diaphragm Blades

9
Rounded diaphragm (31mm:F1.8-F3.5)

Aperture Ring

equipped

Tripod Mount

N/A

Lens Hood

fixed

Lens Cap

O-LW65B (included)

Lens Case

P70-140 (included)

Maximum Diameter x Length

approx. 65mm x 69mm (approx. 2.6in. x 2.7in.)

Weight

approx. 341g
(approx. 12.0oz.)

Temperature

-10°C~40°C (14°F~104°F)

Humidity

85% or less (no condensation)

Included Accessories

Lens Cap O-LW65B, Lens Mount Cap K, Lens Case P70-140

Others

HD Coating
SP (Super Protect) Coating

 

  • Pentax HD Pentax-FA 31mm f/1.8 Limited
  • Pentax O-LW65A Lens Cap for HD Pentax-DA 20-40mm f/2.8-4 Limited DC WR Lens
  • Pentax Rear Lens Cap (B) for Bayonet Mount Lenses
  • Lens Case

Brand: Pentax | Code: 20210

Product options:

Brand: Pentax | Code: 20210

At a glance

  • K-Mount Lens/Full-Frame Format
  • Aperture Range: f/1.8 to f/22
  • High-Grade PENTAX HD Multi-Layer Coating
  • 9 Elements in 7 Groups
  • Super Protect SP Coating
  • 9-Blade Round Diaphragm
  • Integrated Lens Hood
  • Compact Form Factor