N°107410 · Family detail
PentaxZoom·PENTAX K mount·1975
Smc Pentax 28-50mm F/3.5-4.5
Specifications01
MountPENTAX K
Focal length28-50mm
Max aperturef/3.5
TypeZoom
Release year1975
Weight315 g
Filter size52 mm
Min focus distance0.55 m
Aperture blades6
Optical elements10
Groups10
Min aperturef/4.5
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodPH-R52 - Clamp-on round
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeStandard zoom lens
Field Notes02
Pentax SMC K-mount standard zoom lens with a 28–50mm focal range and variable maximum aperture of f/3.5–4.5, intended for general photography.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.