Smc Pentax-A* 400mm F/2.8 ED [IF]

Specifications01

MountPENTAX K

Focal length400mm

Max aperturef/2.8

TypeTelephoto · Prime

Release year1984

Weight6000 g

Min focus distance4 m

Max magnification0.1299

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→ 560mm F/3.9 Pentax Rear Converter-A 2X-L→ 800mm F/5.6 Pentax Rear Converter-A 2X-S→ 800mm F/5.6

EraFilm era

Production statusDiscontinued

Additional Info02

Lens TypeSuper telephoto prime lens

Field Notes02

Pentax K-mount telephoto prime lens with a fixed 400mm focal length and maximum aperture of f/2.8, intended for low-light and distant subjects such as sports and wildlife.

AI-assisted summary — verify against linked sources

Catalog note · source: thelensdb

Sources03

thelensdb.comVisit ↗

lens-db.comVisit ↗

Other Mounts03

No alternate mounts are indexed for this family yet.