Olympus OM-10 was introduced in 1979 as the first camera in Olympus OM “two digit” series. Because of the small size, stylish design, friendly pricing and known Olympus quality it became one of the most popular Olympus models. It is a typical 35mm single lens reflex camera with electronic control, automatic exposure and focal plane shutter. As a basic consumer model it has only the Aperture-priority Automatic Exposure but it is still able to take advantage of the whole (almost) Olympus System accessories.


The OM-10’s circuits are powered by two 1.5V alkaline-manganese or silver oxide batteries. Without them, the shutter will not function. With the Olympus Electronic Flash T32 (or T20) camera turns to a auto flash mode. When turn the flash off, it reverts the camera to AE photography mode. The flash ready light is visible in the viewfinder.

OM10 manual shutter speed adapter

indexThis unit can only be used with the OM-10 (including OM-10 QD and OM-10 FC). Plug it into the Manual Adapter Socket, making sure it slides over the Manual Adapter Guide Knob.

To use it, set the Mode Selector Lever on the camera to “Manual Adapter” and set the shutter speed knob to the desired shutter speed. The viewfinder info can be used as a guideline to set the proper shutter speed. Be aware, however, that the indicated shutter speed in the viewfinder is not controlled by the Manual Adapter but instead shows what the camera would use in Auto mode.

When a T series flash is used, the Mode Selector Lever should be set at the “Auto” position because the 1/60 sec. sync speed is selected automatically.

With other flash units, the Mode Selector Lever must be set to “Manual Adapter” and the Manual Adapter must be set to 1/60 sec or slower. Sometimes, however, the shutter may not be released at the selected speed due to the noise of the flash.