You can use the Pentax PK mount lens to Olympus OM 4/3 Camera
Lens lock / release and stop screw
It able to focus infinity
Made of aluminum
Color: black
Color: black
Work with all PK mount lens
Work with all OM 4/3 mount camera
Auto focus (AF) is not available
Notice:
Although the lens will fit physically,automatic diaphragm,auto-focusing,or any other function will not operate correctly while using this adapter.
In this case "stop-down mode" will need to be used when metering since he lens does not have the ability to have its aperture controlled by the camera body.You can shoot with manual mode or aperture priority mode.