Focus
Manual
Macro
Yes
Mount
Pentax K
Format
35mm full frame
Groups
3
Elements
4
Weight
241g
Filter Thread
52mm
Spec Notes
Half life-size (1:2); reaches 1:1 with Auto Extension Tube. 52mm. Produced 1975-1977.
Max Aperture
f/4
Min Focus Distance
23cm
Aperture Blades
5
Introduced
1975
Reproduction Ratio
1:2