Focus
Manual
Macro
Yes
Mount
Pentax K
Format
35mm full frame
Groups
3
Elements
4
Weight
160g
Filter Thread
49mm
Spec Notes
1:2; 1:1 with extension tubes. 49mm. Produced 1977-1984.
Max Aperture
f/4
Min Focus Distance
23cm
Aperture Blades
5
Introduced
1977
Reproduction Ratio
1:2