Pentax-A SMC 50mm F/2

Specifications01

MountPENTAX K

Focal length50mm

Max aperturef/2

TypePortrait · Prime

Release year1985

Weight145 g

Filter size49 mm

Physical length31 mm

Min focus distance0.45 m

Max magnification0.1499

Aperture blades6

Optical elements5

Groups5

Min aperturef/22

AutofocusNo

StabilizationNo

Aperture controlAperture ring (Manual settings + Auto Exposure setting)

Lens hoodPH-RA49 - Screw-type round PH-SA49 - Clamp-on rectangular

TeleconvertersPentax Rear Converter-A 1.4X-S→ 70mm F/2.8 Pentax Rear Converter-A 2X-S→ 100mm F/4

EraFilm era

Production statusDiscontinued

Additional Info02

ModelSMC

FormatFull-Frame

SeriesA Series Prime

Squeezenone

Lens TypeStandard prime lens

Iris Blades6

Release Date1985

Data Protocolnone

Focus Zoom Rodnone

Front Diameter Mm63

Summary02

Pentax K-mount 50mm prime lens with maximum aperture f/2, suitable for general-purpose photography and low-light use.

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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.