Smc Pentax-FA 645 400mm F/5.6 ED [IF]

Specifications01

MountPENTAX 645

Focal length400mm

Max aperturef/5.6

TypeTelephoto · Prime

Release year1997

Weight1260 g

Filter size77 mm

Min focus distance3 m

Max magnification0.1401

Aperture blades8

Optical elements7

Groups6

AutofocusYes

StabilizationNo

Aperture controlAperture ring (Manual settings + Auto Exposure setting)

Lens hoodBayonet-type PH-RBE77 (round With filter access window)

Teleconverters●Pentax Rear Converter-A 645 1.4X→ 560mm F/7.8 ●Pentax Rear Converter-A 645 2X→ 800mm F/11.2

EraFilm era

Additional Info02

Lens TypeMedium telephoto prime lens

Summary02

Pentax 645 medium-format telephoto lens with a fixed 400mm focal length and maximum aperture of f/5.6 (ED, IF). Intended for distant subjects such as portraits, sports, and wildlife.

AI-assisted summary — verify against linked sources

Specifications from thelensdb

Where 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.

Sources03

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Other Mounts03

No alternate mounts are indexed for this family yet.