Pentax SMC 150mm F/4

Specifications01

MountPENTAX K

Focal length150mm

Max aperturef/4

TypeTelephoto · Prime

Release year1975

Weight373 g

Filter size52 mm

Physical length96 mm

Min focus distance1.8 m

Aperture blades6

Optical elements5

Groups5

Min aperturef/32

AutofocusNo

StabilizationNo

Aperture controlAperture ring (Manual settings only)

Lens hoodPH-R52 - Clamp-on round

EraFilm era

Production statusDiscontinued

Additional Info02

ModelSMC

FormatFull-Frame

SeriesK Series Prime

Squeezenone

Lens TypeMedium telephoto prime lens

Iris Blades6

Release Date1975

Data Protocolnone

Focus Zoom Rodnone

Front Diameter Mm63

Summary02

SMC Pentax 150mm f/4 is a prime telephoto lens for the Pentax K mount, suitable for portraits and other telephoto subjects. It has a fixed f/4 maximum aperture.

AI-assisted summary — verify against linked sources

Specifications from cinelenswiki

Where 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.