Focus
Manual
Mount
Nikon F
Format
35mm full frame
Groups
9
Elements
12
Weight
5200g
Spec Notes
12/9 retrofocus giant, 220 degree CIRCULAR image. Allows normal reflex viewing - NO mirror lock-up (built to clear the mirror). Built-in revolving 5-filter turret (no front thread). Auto/AI/AI-S fold. Made to order into the 1990s.
Diameter mm
236
Max Aperture
f/2.8
Min Aperture
f/22
Min Focus Distance
25cm
Aperture Blades
7
Introduced
1970