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Pentax · Pentax K · Lens

SMC Pentax-M 50mm f/1.4

49mm filter · 180g

Used (avg)
~$65
Updated Jun 2026
Focal length
50mm
Max Aperture
f/1.4
Weight
180g
Filter Thread
49mm
Min Focus Distance
45cm

Mount: Pentax K — compatible with all Pentax K-mount bodies.

Mount
Pentax K
Groups
6
Elements
7
Weight
180g
Autofocus
No
Filter Thread
49mm
Max Aperture
f/1.4
Focal Length
50mm
Image Circle
Full Frame
Min Aperture
22
Min Focus Distance
45cm
Aperture Blades
6
Introduced
1977
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