The Olympus OM-10 is a 35mm single-lens reflex camera model that was launched by Olympus Corporation in June 1979. It is a part of the Olympus OM system (O = Olympus, M = Maitani). Yoshihisa Maitani was a designer of cameras for Olympus Corporation. It was a 35mm focal-plane shutter aperture priority AE SLR camera with an electronic shutter. Only aperture-priority AE was available with the camera unless the optional manual exposure adapter was installed. This allowed the setting of shutter speeds between 1s and 1/1000s, (bulb mode was also available). The camera was equipped with a fixed pentaprism viewfinder which contained an LED exposure indicator. The finder coverage was measured to be 93%. Exposure control was aperture-priority AE using center-weighted light metering. Film winding was done by using the film-wind lever located on the top right of the camera. Film rewinding was done manually using the film-rewind crank located at the top left. The camera body measured 136 × 83 × 50 mm and weighed approximately 430 grams (15 oz). Lens: Olympus OM-system Zuiko Auto Zoom 35-70mm f/3.5 – 4.8.