Focus
Manual
Mount
Pentax K
Format
35mm full frame
Groups
5
Elements
5
Weight
145g
Filter Thread
49mm
Spec Notes
5/5 (same optics as the M 50/2), lightest A normal at 145g. 49mm filter. Produced 1985-1998.
Max Aperture
f/2
Min Focus Distance
45cm
Aperture Blades
6
Introduced
1985