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Olympus OM-1 SLR with 50mm f1.8


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Overall Condition: 8/10 minor body wear from everyday use, meter is working. 

Serial Number: 1265278

Lens: 50mm f1.8

Lens serial: 783363


The OM-1 is an all-mechanical SLR. It has a very large viewfinder with interchangeable screens but a fixed prism. It also has a through-the-lens exposure meter controlling a needle visible in the viewfinder. It has a very compact body, whose form was retained in later models.

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  • Lens Mount: Olympus OM Mount, bayonet type. 
  • Shutter: Focal plane shutter, ring mounted control, with speeds from 1 to 1 /1000 second plus B.
  • Hot Shoe Socket: Built-in. Accessory Shoe 1 or "Fixed" Type for original M-1 or OM-1 bodies.
  • Flash Contacts: FP-X with switch type contact at synchro socket, X contact at shoe: With electronic flash (X) 1 sec to 1/60 sec; with class "M" Bulbs (X) 1 sec to 1/15 sec; with Class "F" Bulbs (X) 1 sec to 1/15 sec; with focal plane Bulbs (FP) 1/60 sec to 1/1000 sec.
  • Viewfinder: Pentaprism type wide-vision (97% of actual picture field) finder. 
  • Viewfinder Magnification: 0.92X at infinity with 50mm lens
  • Viewfinder Apparent Field of View: 23° 30' & 35°
  • Focusing Screens: Standard screen,1-1 Microproism-matte type. Interchangeable with any 13 additional screens.
  • Reflex Mirror: Quick return type with mirror Lock-up control. 
  • Film Loading: Easy loading (Olympus EL system)
  • Film Advance: (Manual) Ratchet type film advance. One stroke or several short strokes. (Motor Drive with MD and OM-1n model only)
  • Film Rewinding: Rewind crank with automatic resetting rewind release lever. 
  • Metering: Via Lever on top panel, Metering ON/OFF Switch
  • Exposure Measurement: Two CdS (Cadmium Sulphide)
  • Self-Timer: Lever system with rortation angle 180°. Approx. 4-12 second delay lever type; Action started via start lever hidden behind Self timer lever. It can be stopped and reset after actuation. 
  • Camera back: Removable hinge type control by Mounting Pin. Interchangeable with Recordata Back 1/2 /3 (OM-1n) and 250 Film Back 1/2.
  • Tripod Socket: As per JIS standard
  • Battery: 1.35V mercury battery Mallory PX625, or equivalent .
  • Dimensions & Weights: Body only: 510g, Body with f/1.8 lens: 136mm x 83mm x 81mm 680g.

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Review by Phoblographer

What’s probably most noteworthy about the Olympus OM System is the access to the impressive Zuiko lenses, which are favored for their optical performance. We can definitely see this in Max and Jules’ sample shots using Kodak T-Max 400 and Fuji Provia 100 films. By the time the OM-1 was introduced in 1972, there were already over 30 lenses and many different accessories to choose from for this camera.

Also, as a mechanical camera with a center-weighted light meter (which can be turned on and off with a switch), the functions don’t depend on the battery. This means you won’t have a problem with your camera settings when the battery dies.

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  • http://camerapedia.wikia.com/wiki/Olympus_OM-1/2/3/4
  • https://www.thephoblographer.com/2017/12/13/olympus-om-1-video-review/

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Type: 35mm Camera

Vendor: Olympus