Focus
Manual
Mount
Pentax K
Format
35mm full frame
Weight
191g
Filter Thread
52mm
Length mm
39
Generation
XR Rikenon
Stabilized
No
Diameter mm
63
Max Aperture
f/3.5
Min Focus Distance
40cm
Weather Sealed
No
Aperture Blades
5
Introduced
1977
Focal Length (Max)
28mm
Focal Length (Min)
28mm