N°110097 · Family detail
PentaxTelephoto·PENTAX K mount·1975
Smc Pentax 500mm F/4.5
Specifications01
MountPENTAX K
Focal length500mm
Max aperturef/4.5
TypeTelephoto · Prime
Release year1975
Weight3330 g
Filter size52 mm
Min focus distance10 m
Aperture blades10
Optical elements4
Groups4
AutofocusNo
StabilizationNo
Aperture controlAperture ring
Lens hoodBuilt-in telescopic round
TeleconvertersPentax Rear Converter-A 1.4X-L→ 700mm F/6.3
Pentax Rear Converter-A 2X-L→ 1000mm F/9
Pentax Rear Converter-A 2X-S→ 1000mm F/9
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeSuper telephoto prime lens
Field Notes02
Pentax K-mount prime super-telephoto lens with a 500mm focal length and f/4.5 maximum aperture, intended for long-distance subjects such as wildlife and sports.
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.