Olympus OM- Series lenses can be mounted on Olympus E-System DSLRs with the optional MF-1 OM Lens Adapter. OM- Series lenses are unable to communicate with the firmware in E-System camera bodies. Therefore, their use in this fashion has the following restrictions:

* Autofocus is not available.
* OM Series autofocus lenses cannot be manually focused.
* Stop-down metering is used.
* Spot metering does not work properly.
* Although it is possible to use the A (Aperture priority AE) shooting mode in auto exposure, the aperture display is not available.
* The aperture display in the M (Manual) shooting mode is not available.
* In P (Program AE) or S (Shutter speed priority AE) shooting mode, the shutter releases, but the auto exposure control does not work.
* The distance scale on the OM system lens may not indicate the actual distance. Always use the viewfinder or Live View for focusing.

Because the OM- Series lenses were designed for film rather than for use with a digital sensor, the image quality may not equal that produced by Zuiko