Micro 4/3 and not-so-good lenses for cheap: Olympus E-PL1 with Industar 69 28mm f2.8 (http://flic.kr/p/biBejM) This lens has a compact pancake size even with the M39 adapter. But that’s almost its only merit. It’s very soft, and I mean VERY, even at f8. The one I own is also probably defective, as some areas are more soft than others. If you want one, I can give you mine; but I can’t imagine a reason for wanting one.