N°417259 · Family detail
PentaxZoom·PENTAX K mount·1999
Smc Pentax-FA 28-105mm F/4-5.6
Specifications01
MountPENTAX K
Focal length28-105mm
Max aperturef/4
TypeZoom
Release year1999
Weight305 g
Filter size62 mm
Min focus distance0.5 m
Max magnification0.1799
Aperture blades6
Optical elements15
Groups12
Min aperturef/5.6
AutofocusYes
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodPH-RBH62 - Bayonet-type petal-shaped
TeleconvertersPentax Rear Converter-A 1.4X-S→ 39-147mm F/5.6-7.8
Pentax Rear Converter-A 2X-S→ 56-210mm F/8-11.2
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeStandard zoom lens
Field Notes02
Pentax K-mount zoom lens with 28–105mm focal length and F/4–5.6 variable aperture. Intended for general-purpose photography such as wide-angle to short-telephoto use.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.