The eBay reseller “jieying-usa” made the second reworked Rodenstock 50mm f/0.75 for Micro Four Thirds (he already made one lens a few months ago). It fits on your camera without the need of an adapter. The lens focuses from 3ft to infinity. Wide open, images are very soft but unlike C-mount lenses the circle covers the full m43 size. You can see a few image samples on Flickr.