Permits the adaption of certain Olympus OM lenses to be used with the E-1, Evolt E-300, and E-500.
The distance scale on the OM system lens may not indicate the actual distance. Always use the viewfinder for focusing.
Please note: Autofocus (AF)is not available. Stop-down metering is used. Spot metering does not work properly. Although it is possible to use A (aperture priority AE) mode in auto exposure, the aperture display is not available. The aperture display in M (Manual) is not available. In P (Program AE) or S (Shutter speed - priority AE) mode, the shutter releases, but the auto exposure control does not work.