N°413094 · Family detail
PentaxWide·PENTAX K mount·2001
Smc Pentax-FA 31mm F/1.8 AL Limited
Specifications01
MountPENTAX K
Focal length31mm
Max aperturef/1.8
TypeWide · Prime
Release year2001
Weight345 g
Filter size58 mm
Physical length69 mm
Min focus distance0.3 m
Max magnification0.16
Aperture blades9
Optical elements9
Groups7
Min aperturef/22
AutofocusYes
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodBuilt-in petal-shaped
TeleconvertersHD Pentax-DA 1.4X AF Rear Converter AW→ 43.4mm F/2.5
Pentax Rear Converter-A 1.4X-S→ 43.4mm F/2.5
Pentax Rear Converter-A 2X-S→ 62mm F/3.6
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeWide-angle prime lens
Summary02
Pentax K-mount 31mm prime lens with a maximum aperture of f/1.8, designed for standard/wide-angle photography such as street, travel, and low-light use. Limited series AL lens.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Pentax K mount has a flange distance of 45.46 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Pentax DA and FA J lenses have no aperture ring. Use an adapter with its own aperture control.
- Pentax DA lenses are made for APS-C.
- Sony EAdapter · 27.46 mm
- Canon RFAdapter · 25.46 mm
- Nikon ZAdapter · 29.46 mm
- Fujifilm XAdapter · 27.76 mm
- L-MountAdapter · 25.46 mm
- Micro Four ThirdsAdapter · 26.21 mm
- Fujifilm G (GFX)Adapter · 18.76 mm
- Canon EF-MAdapter · 27.46 mm
- Canon EFAdapter · 1.46 mm
A rear element that sticks out can hit the camera mirror.
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
No alternate mounts are indexed for this family yet.