Smc Pentax-FA* 645 300mm F/4 ED [IF]

Specifications01

MountPENTAX 645

Focal length300mm

Max aperturef/4

TypeTelephoto · Prime

Release year1997

Weight1490 g

Filter size77 mm

Min focus distance3 m

Max magnification0.1099

Aperture blades8

Optical elements8

Groups8

AutofocusYes

StabilizationNo

Aperture controlAperture ring (Manual settings + Auto Exposure setting)

Lens hoodPH-RBE77 - Bayonet-type round With filter access window

TeleconvertersPentax Rear Converter-A 645 1.4X→ 420mm F/5.6 Pentax Rear Converter-A 645 2X→ 600mm F/8

EraFilm era

Production statusDiscontinued

Additional Info02

Lens TypeMedium telephoto prime lens

Summary02

Pentax 645 medium-format telephoto prime lens with a 300mm focal length and f/4 maximum aperture. Designed for portrait, sports, and other distant subjects on Pentax 645 systems.

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.