I'm fascinated by this new interchangeability! I bought an OM-m4/3 adapter and now I'm looking for a lens to play with before I go nuts on buying lenses. A 50 1.8 was my first choice, but I see 200mm 4.0 and 65-200, 100-200 zooms. Does anyone have experience with less expensive OM zooms on a E-PLx? That 100-200 f/5 seems like it could be fun (in good light).