Hello! I'm a photography enthusiast and picked up an Olympus E-PL2 this summer but I've found I don't get to take nearly as many pictures as I'd like, as I'm stuck inside quite often. So, I've decided I'd like to try my hand at macro photography. Given a very low budget of about $100 Canadian max, would it be worth it to try to find an old macro lens on ebay and get an adapter? Or would even older lenses that price range not be worth it? Should I just get extension tubes?