System: Olympus OM system.
Camera type: 35mm single lens reflex with automatic exposure control electronic focal plane shutter.
Film format: 24 x36mm
Lens mount: Olympus OM mount bayonet type, rotation angle 70 degrees flange back 46mm.
Shutter: Focal plane shutter ,automatic exposure control from 120 sec to 1/1000 sec. ( ASA 100, F1,2 at normal temperature and humidity) Manuel exposure B-1-1/1000sec. ring mounted control.
Synch: FP-X switch type contact, incorrect flash prevention . (accessory shoe mount for X contact)
Automatic exposure control: Aperture-preferred automatic exposure control electronic shutter type. TTL direct light measuring system. Measuring range: ASA100 from F1,2, 120 seconds to F16, 1/1000second. (EV -6.5–EV 18). Light sensors: 2 SBC sensors .Large exposure compensation dial: +_ 2EV (within the ASA film speed range). Automatic flash exposure . Direct contacts for TTL auto flash .
Manuel exposure: TTL type. Measuring system : Full aperture centre weighted metering . Measuring range: EV 1.5-EV 17. (ASA 100 with F1.2 standard lens.) Light sensors : 2 CDS sensors. Zero-method with needle visible in viewfinder.
Film speed setting: ASA 12-1600. set by lifting and rotating film speed dial.
power source: Two 1.5 v silver oxide batteries. LR 44 or S-76.
Battery check: 3 stage battery check lamp. (light emitting diode) indicates full voltage ,depleted charge and exhaustion of batteries. Shutter lock to limit drainage.
Mirror unlock: Mirror lockup can be released simultaneously with battery check.
View finder: Pent prism type wide-vision finder.
Focusing screens: wide selection of interchangeable screens. Standard type focusing screen 1-13.
Finder view field; 97% of the actual picture field.
View finder magnification : 0,92x at infinity with standard 50mm lens.
Apparent field view: vertical 23°. Horizontal 35°.
Indicators in view finder: 3 stage selector lever. (Auto: shutter speed indicator–Manuel : exposure index.–Off nothing) Exposure compensation marker. Charge/ auto check lamp with T series flash units.
Reflex mirror: Oversize , quick return type (without lock-up)
Film loading: Olympus easy loading.
Manuel film advance: Lever type with 150 ° angle for one long or several short strokes, Pre-advance angle 30 ° , self cocking double advance and double exposure prevention.
Motor drive advance: With motor drive 1 or 2 unit attached , single frame and continuous advance at speed of 5 frames per second. ( at exposures above 1/500sec). With fresh batteries.
Exposure counter: Progressive type with automatic reset.
Film rewind: Crank type with rewind release lever setting , automatic return.
Self-timer: 4-12 seconds delay lever type with 180° maximum angle can be stopped and reset after actuation.
Camera back: Removable hinge type with memo holder. Interchangeable with record data back 2 ,3 ,4 and 250 film back 1.
Hot shoe socket : Olympus special accessory shoe (optional) attachable. Shoe 4. or connector 4.
Dimensions and weights :136 x 83x 50mm. 520 grams.
The OM 2 retains the same characteristics as the OM-1 , but adds an electronic shutter for automatic aperture-preferred exposure control, and to go with it the revolutionary TTL (direct-off-the –film ) light measuring method. On “ manual” the OM2 works in exactly the same way as the OM-1 and has exactly the same performance. The OM-2n can be instantly switched between manual and auto modes at the flip of a selector lever