Olympus OM-1 body in makers box
System : Olympus OM system.
Camera type: 35mm single lens reflex with focal plane shutter.
Film format: 24x36mm
Lens mount : Olympus OM mount , bayonet type , rotation angle 70 degree flange back 46mm.
Minimum focusing distance : 45 cm with all standard lenses.
Shutter : Focal plane shutter , ring mounted control with speeds from 1 to 1/1000s sec plus B.
Flash contacts : FP-X switch type contact
Flash synchronisation: 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 1/15sec. With focal plane bulbs (FP) 1/60 to 1/1000sec.
Hot shoe socket : Built in .Easy to attach accessory shoe 1 available.
Viewfinder: Pent prism type wide-version finder shows 97% of the actual picture field. Exposure meter needle .
Viewfinder magnification : 0,92 at infinity with 50mm lens.
Viewfinder apparent field of view: 23 º30º & 35 º
Focusing screens : 1-13 micro prism/split image-matte type provided. Interchangeable with any 13 additional screens.
Reflex mirror: Oversize , quick return type with mirror lock-up control.
Film loading : Olympus easy loading.
Film advance: Manual Ratchet type film advance . May be advanced in one stroke or several short strokes for a total of 150 ºrotation, pre-advance angle 30 º. Built-in prevention against double advance with double exposure override .
Exposure counter: Progressive type from “S” to 36 and “E” (end). Counter automatically resets to S when camera back is opened.
Film rewinding : Rewind crank with automatic resetting rewind release lever.
Exposure Measurement: Two highly sensitive CDS cells located on either side of the eyepiece provide through-the-lens open aperture light measurement. Zero-method with needle visible in the finder..On -off switch located at top of camera.
Exposure range : EV 2-17 (ASA 100 with f1.4 50mm lens )
Battery: 1,35 volt mercury battery MR9 (Eveready or Ucar ) EPX625. Mallory PX625.
Film speed range : ASA 25-1600.
Self timer : 4-12 seconds delay lever type : can be stopped and reset after actuation.
Camera back ; Removable hinge type . Interchangeable with Recordata Back 2-3 and 250 film back 1.
Hot shoe socket : Built in. Easy to attach Accessory Shoe 1 Supplied.
Lens accessory size : 49mm threaded fore F1.8 and F1.4 lenses : 55mm threaded for F1.2 lens.
Dimensions & Weights : With F1.8 lens : 136mm x 83mm x 81mm. 660 gram.