N°413975 · Family detail
PentaxPortrait·PENTAX K mount·1991
Smc Pentax-FA 50mm F/1.4
Specifications01
MountPENTAX K
Focal length50mm
Max aperturef/1.4
TypePortrait · Prime
Release year1991
Weight220 g
Filter size49 mm
Physical length38 mm
Min focus distance0.45 m
Max magnification0.1499
Aperture blades8
Optical elements7
Groups6
Min aperturef/22
AutofocusYes
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodRH-RC49 - Screw-type round
PH-SA49 - Clamp-on rectangular
TeleconvertersHD Pentax-DA 1.4X AF Rear Converter AW→ 70mm F/2
Pentax Rear Converter-A 1.4X-S→ 70mm F/2
Pentax Rear Converter-A 2X-S→ 100mm F/2.8
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeStandard prime lens
Field Notes02
Pentax K-mount standard portrait prime with a 50mm focal length and maximum aperture of f/1.4 for low-light and shallow depth-of-field use. Manual/AF behavior depends on the camera body.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.