I am a newbie with an Fz5 and a 2x tele conversion lens with step-down ring that I received for Christmas. I got the lens on the camera ok but I'm not sure what to do next because there doesn't seem to be any difference in the zoom with the extra lens attached. Is there some setting that I need to change or something? This is my first camera and there wasn't even a manual in the box with my brand new camera. Would greatly appreciate any guidance.