FZ-18 Bought this camera, took it on trip to S. America. In the majority of my pictures taken with full zoom, one side of picture is blurry. I returned camera, was told it was defective, and was given a replacement, also brand new. Same thing happened. Now I am on my THIRD of same model and same thing happens. I have tested camera on self-timer at far greater distances than 10 feet, same problem. Any advice? I have not read any reviews citing this problem. Otherwise I am happy with pictures it takes.
Another possibility. The lens will actually zoom (optically) to 28X+ mag at lower resolutions. As stated in the owners manual with possible (I forget the exact wording) degradation of the image. Is it possible you may using a lower res?