N°102058 · Family detail
PentaxTelephoto·PENTAX K mount·1983
Smc Pentax-A* 300mm F/2.8 ED
Specifications01
MountPENTAX K
Focal length300mm
Max aperturef/2.8
TypeTelephoto · Prime
Release year1983
Weight2970 g
Min focus distance3 m
Aperture blades8
Optical elements8
Groups8
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodBuilt-in telescopic round
TeleconvertersPentax Rear Converter-A 1.4X-L→ 420mm F/3.9
Pentax Rear Converter-A 1.4X-S→ 420mm F/3.9
Pentax Rear Converter-A 2X-L→ 600mm F/5.6
Pentax Rear Converter-A 2X-S→ 600mm F/5.6
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeSuper telephoto prime lens
Field Notes02
Pentax K-mount 300mm prime telephoto lens with a fixed f/2.8 maximum aperture, designed for long-range subject isolation (e.g., sports, wildlife, and portraits).
AI-assisted summary — verify against linked sources
Other Mounts03
No alternate mounts are indexed for this family yet.