Olympus OM-20
The Olympus OM-20 is a small picture - SLR (35 mm film), manual focus on the lens. It is a further development of the Olympus OM-10 ; thus its parameters largely match those of the OM-10. In the USA the OM-20 was sold as the OM-G.
Technical specifications
- Production OM-20: 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 microprismatic ring
- Exposure times: 1 - 1/1000 sec. And B.
- Type of closure: Cloth focal plane shutter with time control from approx. 1 to 1/1000 sec, running horizontally.
- Exposure metering: center-weighted integral by means of the Olympic-typical autodynamic metering control (ADM). The measurement is done TTL
- Exposure compensation +/- 2 f-stops in 1/3 steps.
- Flash: built-in flash shoe above the prism ; Synchronization time 1/60 sec.
- Self-timer: electronic, 12 seconds forward, with acoustic signal.
- Film transport: manual or with connected winder or motor drive, manual film rewind
- Built-in camera back
- Power supply: 2 silver oxide button cells ( SR44 )
Differences between the OM-10 and OM-20
In contrast to the OM-10, the OM-20 was again equipped with a timing ring around the bayonet, which made manual exposure adjustment possible without additional equipment. The measured times were shown illuminated in the viewfinder (for example, the number “125” lit up for 1/125 sec.), While with the OM-10 the respective time was indicated by an LED next to the time scale. The feel was improved by means of a screw-on handle on the left front of the camera. Compared to the OM-10, the OM-20 looked a bit more modern. The OM 20 had a "Lumi-Micron" target and, as an alternative to the winder, the Motordrive 1 could also be used.
