This might be a previously asked question. I can't find the answer anywhere. I have an Olympus Pen EP-1 M 4/3 and want to buy an Olympus OM 100mm f2.8 lens to fit same. At a well recommended site - rainbow imaging - they are selling an OM-M4/3 adapter for this purpose. When I asked Olympus what adapter they said an MF-2 adapter is the answer. Is there something wrong with the product at Rainbow Imaging?