I don't have the money to buy a macro lens for close up photos. So I was wondering if a "Reverse Mount Macro Adapter" do an OKAY job in getting some close shots? I own a Nikon D40, with a kit lens 18-55mm and also 50mm lens. Will a Reverse Mount Macro Adapter be compatible with my camera and lens? And which one should I get exactly ? Help me out guys , please !