N°105587 · Family detail
PentaxTelephoto·PENTAX 645 mount·1985
Pentax-A 645 SMC 200mm F/4
Specifications01
MountPENTAX 645
Focal length200mm
Max aperturef/4
TypeTelephoto · Prime
Release year1985
Weight570 g
Filter size58 mm
Physical length116 mm
Min focus distance1.4 m
Max magnification0.1299
Aperture blades8
Optical elements4
Groups4
Min aperturef/32
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodBuilt-in telescopic round
TeleconvertersPentax Rear Converter-A 645 1.4X→ 280mm F/5.6
Pentax Rear Converter-A 645 2X→ 400mm F/8
EraFilm era
Production statusDiscontinued
Additional Info02
Model645 SMC
Format645 film
SeriesPentax-A
Squeezenone
Lens TypeShort telephoto prime lens
Iris Blades8
Data Protocolnone
Focus Zoom Rodnone
Front Diameter Mm74
Summary02
Pentax 645 medium-format prime telephoto lens with a 200mm focal length and f/4 maximum aperture, intended for portraits and distant subjects. Image stabilization is not indicated.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Pentax 645 mount has a flange distance of 70.87 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Pentax 645 DA lenses have no aperture ring. Use an adapter with its own aperture control.
- Sony EAdapter · 52.87 mm
- Canon RFAdapter · 50.87 mm
- Nikon ZAdapter · 54.87 mm
- Fujifilm XAdapter · 53.17 mm
- L-MountAdapter · 50.87 mm
- Micro Four ThirdsAdapter · 51.62 mm
- Fujifilm G (GFX)Adapter · 44.17 mm
- Canon EF-MAdapter · 52.87 mm
- Canon EFAdapter · 26.87 mm
A rear element that sticks out can hit the camera mirror.
- Nikon FAdapter · 24.37 mm
A rear element that sticks out can hit the camera mirror.
Other Mounts03
No alternate mounts are indexed for this family yet.