Olympus OM Series lenses can be mounted on Olympus E-System DSLRs with the optional MF-1 OM to 4/3 Lens Adapter. Because these lenses are unable to communicate with the camera body, the use of OM Series lenses 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 Digital lenses.