Hi, I'm the proud owner of G1, and last week I purchased a GH2. I decided to explore the world of macro, but since buying the GH2 I just don't have the cash to buy a macro lens (besides I don't know which to buy ). So I purchase the Fotodiox extension tubes and tried to use them with the 14-45 and the 20mm but I could not focus on anything. My question is how the heck you use this things?? Aren't you supposed to stack them between the camera body and the lens? Help please.