Focus
Manual
Mount
M42
Format
35mm full frame
Groups
7
Coating
Super-Multi-Coated
Fisheye
Yes
Elements
11
Weight
228g
Length mm
30
Generation
Super-Multi-Coated (spans Super-Takumar to SMC)
Stabilized
No
Diameter mm
66.5
Filter Note
built-in filters; rear gel
Max Aperture
f/4
Min Aperture
f/22
Min Focus Distance
20cm
Angle Of View
180 deg
Weather Sealed
No
Aperture Blades
6
Introduced
1967
Focal Length (Max)
17mm
Focal Length (Min)
17mm