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Pentax · Pentax Kaf2 · Lens

SMC Pentax-FA 31mm f/1.8 AL Limited

Name: Pentax SMC Pentax-FA 31mm f/1.8 AL Limited
Brand: Pentax

58mm filter · 341g

New

$1,199

Used (avg)

~$850

Updated Jul 2026

Focal length

31mm

Max Aperture

f/1.8

Weight

341g

Filter Thread

58mm

Min Focus Distance

30cm

Mount: Pentax Kaf2 — compatible with all Pentax Kaf2-mount bodies.

Mount

Pentax KAF2

Groups

Elements

Weight

341g

Autofocus

Yes

Filter Thread

58mm

Length mm

Diameter mm

Max Aperture

f/1.8

Min Aperture

f/22

Image Circle

Full Frame

Min Aperture

Min Focus Distance

30cm

Aperture Blades

Introduced

2001

Focal Length (Max)

31mm

Focal Length (Min)

31mm

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