N°107394 · Family detail
PentaxZoom·PENTAX K mount·1978
Smc Pentax-M 28-50mm F/3.5-4.5
Specifications01
MountPENTAX K
Focal length28-50mm
Max aperturef/3.5
TypeZoom
Release year1978
Weight310 g
Filter size52 mm
Min focus distance0.6 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 K-mount zoom lens with a 28–50mm focal range and maximum apertures of f/3.5–4.5. A standard/general-purpose lens for everyday photography and light-to-moderate low-light use.
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Other Mounts03
No alternate mounts are indexed for this family yet.