Maybe one of these similar products would be of interest:-
Olympus ZUIKO DIGITAL ED 50-200 mm 1:2.8-3.5 SWD Lens
Olympus ZUIKO DIGITAL ED 70-300mm 1:4.0-5.6 Lens black
Olympus Zuiko MC 35-70mm f4 Manual Focus Zoom Lens for Olympus OM SLR Cameras
Olympus ZUIKO DIGITAL ED 50-200 mm 1:2.8-3.5 SWD Lens
Olympus ZUIKO DIGITAL ED 70-300mm 1:4.0-5.6 Lens black
Olympus Zuiko MC 35-70mm f4 Manual Focus Zoom Lens for Olympus OM SLR Cameras