N°110177 · Family detail
PentaxMacro·PENTAX K mount·1977
Pentax-M SMC 50mm F/4 Macro
Specifications01
MountPENTAX K
Focal length50mm
Max aperturef/4
TypeMacro · Prime
Release year1977
Weight160 g
Filter size49 mm
Physical length42.5 mm
Min focus distance0.45 m
Max magnification0.5
Aperture blades5
Optical elements4
Groups3
Min aperturef/32
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodNot required
EraFilm era
Production statusDiscontinued
Additional Info02
ModelSMC
FormatFull-Frame
SeriesM Series Macro
Squeezenone
Lens TypeMacro lens
Iris Blades5
Release Date1977
Data Protocolnone
Focus Zoom Rodnone
Front Diameter Mm63
Field Notes02
Pentax K-mount 50mm prime macro lens with a maximum aperture of f/4, designed for close-up photography such as small subjects and product work.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.