Focus
Manual
Mount
Pentax K
Format
35mm full frame
Groups
5
Elements
5
Weight
1240g
Filter Thread
77mm
Spec Notes
Refractive, auto diaphragm (8 blades), 77mm. Replaced the manual-diaphragm K 400/5.6. Produced 1977-1984.
Max Aperture
f/5.6
Min Focus Distance
500cm
Aperture Blades
8
Introduced
1977