Photozone posted the tull Lumix 30mm f/2.8 macro lens review:
Technically there’s nothing to complain about the Panasonic lens. It’s sharp, small and affordable. However, if macro photography is really your thing, it probably makes more sense to check out the Olympus M.Zuiko 60mm f/2.8 ED macro. The Olympus lens isn’t superior but it can provide a longer working distance to your main subject. Even if you are not hunting bugs, it makes life a lot easier as far as scene lighting is concerned.