I was lucky enough to get an olympus OM20 and 2 lenses. The lenses are good and I wanted to use them on my nikon. I finally found a way. Cheap extension tubes that thread together I got a nikon set and a 4/3 set which can thread together. Then a 4/3 to OM converter. Now I can use old OM lenses on my nikon dslr. Here is an example I rather like the bokeh.