Is anyone using this lens? This looks like a nice lens to use with my E-PL1 and there are a few on eBay that are priced real cheap. My question is which adapter would be needed to mount this lens on a µ 4/3 camera? The rear lens element protrudes from the back past the M39 threads Jupiter-12 half back | Flickr - Photo Sharing! It looks like there wouldn't be enough room in the body to fit the lens. Is there another adapter specially built for lenses like this?