Olympus OM lens to Olympus/Panasonic Micro 4/3(micro four thirds) adapter. With this adapter, you can use Olympus OM mount Lenses on Micro 4/3 systerm camera. There is no ROM connection on the ring, so disphragm control of the lens has to be set manualy. It is possible to use Micro rings and other accessories. It allows to infinity focus. Material: Aluminum Metal Color: Black Brand new, Never used Suible for: - Lens: Olympus OM lens - Camera: Olympus E-P1, E-P2 - Panasonic DMC-G1, GH1, GF1.