N°109552 · Family detail
PentaxTelephoto·PENTAX K mount·1981
Pentax-M* SMC 300mm F/4
Specifications01
MountPENTAX K
Focal length300mm
Max aperturef/4
TypeTelephoto · Prime
Release year1981
Weight825 g
Filter size77 mm
Physical length132 mm
Min focus distance4 m
Aperture blades8
Optical elements8
Groups7
Min aperturef/32
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in telescopic round
EraFilm era
Production statusDiscontinued
Additional Info02
ModelSMC
FormatFull-Frame
SeriesM* Series Prime
Squeezenone
Lens TypeSuper telephoto prime lens
Iris Blades8
Release Date1981
Data Protocolnone
Focus Zoom Rodnone
Front Diameter Mm84
Field Notes02
Pentax K-mount 300mm f/4 telephoto prime lens. Intended for long-distance subjects such as wildlife and sports, with a fixed maximum aperture of f/4.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.