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
Manual Focus Zoom Lens for Olympus 75-150mm f/4 Zuiko Auto-Zoom Lens
Wide angle lens for Olympus 28mm F/3.5 Zuiko Auto-W Manual Focus Lens