Olympus OM-30

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The Olympus OM-30 , Olympus OM-F in North America is a small picture - SLR (35 mm film), with autofocus which only with the particular lens "Zuiko Auto-Zoom 1: 4 / 35-70 mm autofocus " works.

Technical specifications

Olympus OM-30
  • Production OM-30: 1983 to 1987 by Olympus Optical Co., Japan
  • Dimensions: 134 × 85 × 50 mm
  • Weight: (housing alone) 430 grams
  • Viewfinder: Pentaprism viewfinder with 93% viewing area; Permanently installed focusing screen with cross-sectional image indicator and microprism ring, plus electronic setting aids (LED)
  • Exposure times: 2 - 1/1000 s and B.
  • Type of closure: Cloth focal plane shutter with time control from approx. 2 to 1/1000 s, running horizontally. In contrast to the OM-1 and OM-2, there is no mirror attenuation .
  • Exposure metering: The camera only has an aperture priority function . The exposure measurement on the Olympus OM-30 is done through the lens ( TTL ); with the shutter open . The light reflected by the secondary mirror, the reference pattern and the film is measured (“off the film”, OTF; also called “ autodynamic ” control).
  • Exposure compensation +/- 2 f-stops in 1/3 steps.
  • Flash: built-in flash shoe above the prism ; Synchronization time 1/60 s, no flash control from the camera.
  • Self-timer: electronic, 12 seconds forward, with acoustic signal.
  • Film transport: manual or with connected winder and motor drive
  • Power supply: 5 silver oxide button cells ( SR44 )

particularities

The OM-30 was the first tentative attempt to bring the OM system into the era of autofocus. Olympus supplied a special lens for this, the Zuiko Auto-Zoom 1: 4 / 35-70 mm Auto Focus. All other lenses could also be used, but without the autofocus. The electronic setting aids under the viewfinder image (two arrows to indicate the direction in which to focus and a rectangle for correct focus) could be used for this. At the same time, the correct sharpness can be indicated by a beep signal (which can be switched off). The sharpness indication system, however, requires considerably more electricity than all other OM cameras. Three of the five cells are required for the electronic setting aids. The possibility of the sharpening trap was also interesting when a motor drive was attached. If the object to be photographed comes into focus, the camera releases automatically.

Zuiko Auto-Zoom 1: 4 / 35-70mm Auto Focus

In contrast to modern autofocus lenses, the autofocus unit is built into the lens in this lens; the light is partially directed to the autofocus module via a beam splitter. However, this means that the lens is fainter than others. The system was generally not up to date because it was very slow and the lens can be described as unwieldy. If the lens was connected to an OM camera other than the OM-30, it could be used in the power focus mode.

Web links

Commons : Olympus OM-30  - collection of images, videos and audio files

literature