Focus
Manual
Mount
M42
Notes
el/grp 6/4 per one source (disputed); fold cosmetic v1/v2/v3
Format
35mm full frame
Groups
4
Made By
Tomioka (collector-attributed; nameplate unmarked)
Elements
6
Weight
306g
Filter Thread
55mm
Length mm
52
Generation
Auto Rikenon
Stabilized
No
Diameter mm
66
Max Aperture
f/1.4
Min Aperture
f/16
Min Focus Distance
45cm
Weather Sealed
No
Aperture Blades
6
Introduced
1964
Focal Length (Max)
55mm
Focal Length (Min)
55mm