Olympus OM-1 Repair Manual page 22

GENERAL OUTLINE AND MECHANICAL FEATURES
General Outline:
OLYMPUS Code Name: MDS
Model Name: Olympus OM-1
Main Features:
Format: z4 x 36mm
Lens Mount: Olympus OM-Mount, bayonet type.
Flange back - 46.0mm
Bayonet rotation = 70° (clockwise to mount).
Lens release button on the side of the lens.
Shutter:
Type:
Shutter Speed:
Dial:
Charging:
Focal plane type
B, 1 to 1/1000 of a second.
On the lens mount.
Self-cocking.
Flash Synchronization:
X and FP with switch
With electronic flash (X) 1 to 1/60 sec.
With Class "M" bulbs (X) 1 to 1/15 sec.
With Class "F" bulbs (X) 1 to 1/15 sec.
With focal plane bulbs (FP) 1/60 to 1/1000 sec.
Viewfinder:
Type: Single reflex type, eye-level viewfinder.
Prism: Pentagonal roof prism, fixed, silver-coated.
Focusing Screen:l-1 Microprism-Matte Type provided.
Interchangeable with any of 11 additional
screens available.