Well, that's true. But with the EP-2, you can get an aftermarket extension tube which provides a m4/3 mount the requisite number of millimeters away from the camera's mount. Each legacy-lens specific adapter can affix to it. With NEX, if you use Nikon, Konica AR, Pentax M42 and Leica M and R lenses you then need extension tubes for each brand. I'm not saying it can't be done, but there is a PIA factor, which am surprised the market has not overcome. I guess the answer is that cross-platform macro is currently a practice or need without a market constituency.