Focus
Manual
Mount
Olympus OM
Format
35mm full frame
Elements
7 elements in 6 groups
Weight
230g
Filter Thread
49mm
Length mm
36
Production
1973–1987
Spec Notes
4-5 marking generations (silver-nose SC > black SC > MC > late optical recompute at serial ~>1,100,000 with +4mm length, same 7/6 count; the late version is the collector-sought one). Early units used thoriated rare-earth glass. Folded into one row: only the late recompute differs optically and per-version specs are not separately published.
Stabilized
No
Diameter mm
60
Max Aperture
f/1.4
Min Aperture
f/16
Focal Length
50mm
Min Focus Distance
45cm
Weather Sealed
No