Hi all. I have a chance to buy this lens and would appreciate any feedback. I read it's a high grade lens with stellar performance. I would use it on my E-PL5 with adapter like the 14-54II with which I'm very satisfied. Is it worth it. By the way I'' also use it with the E-P5 or GX7, it depends on which one I'll buy. So my other question is: how do 4/3 lens perform on Panasonic bodies? Is the adapter compatible even maintaining AF on Pana? Thanks all.