Focus
Manual
Mount
Pentax K
Format
35mm full frame
Groups
5
Elements
5
Weight
5290g
Filter Thread
52mm
Spec Notes
REFRACTIVE 1000mm (NOT the mirror lens) - distinct from the Reflex 1000/11. 52mm rear drop-in. Produced 1975-1986.
Max Aperture
f/8
Min Focus Distance
3000cm
Aperture Blades
10
Introduced
1975