N°418270 · Family detail
PentaxMirror·PENTAX K mount·1984
Pentax SMC 400-600mm F/8-12 Reflex
Specifications01
MountPENTAX K
Focal length400-600mm
Max aperturef/8
TypeMirror · Telephoto · Zoom
Release year1984
Weight730 g
Filter size67 mm
Physical length108 mm
Min focus distance3 m
Max magnification0.4
Optical elements12
Groups7
Min aperturef/8
AutofocusNo
StabilizationNo
Aperture controlNone
Lens hoodH-R67 - Screw-type round
TeleconvertersPentax Rear Converter-A 1.4X-L→ 560-840mm F/11.2-16.8
Pentax Rear Converter-A 2X-S→ 800-1200mm F/16-24
EraFilm era
Production statusDiscontinued
Additional Info02
ModelSMC
FormatFull-Frame
SeriesK Series Reflex
Squeezenone
Lens TypeTelephoto zoom lens
Release Date1984
Data Protocolnone
Focus Zoom Rodnone
Front Diameter Mm82
Summary02
Pentax K-mount reflex super-telephoto zoom lens with a 400–600mm focal range and variable f/8–f/12 maximum aperture, intended for distant subjects such as sports or wildlife.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Pentax K mount has a flange distance of 45.46 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Pentax DA and FA J lenses have no aperture ring. Use an adapter with its own aperture control.
- Pentax DA lenses are made for APS-C.
- Sony EAdapter · 27.46 mm
- Canon RFAdapter · 25.46 mm
- Nikon ZAdapter · 29.46 mm
- Fujifilm XAdapter · 27.76 mm
- L-MountAdapter · 25.46 mm
- Micro Four ThirdsAdapter · 26.21 mm
- Fujifilm G (GFX)Adapter · 18.76 mm
- Canon EF-MAdapter · 27.46 mm
- Canon EFAdapter · 1.46 mm
A rear element that sticks out can hit the camera mirror.
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
No alternate mounts are indexed for this family yet.