Standing at the top of Sony's H-series (H for High-powered zoom) the Sony HX200V features a 30X optical zoom that captures an image from an 18 Megapixel CMOS sensor. It can also use a digital zoom (Sony's Clear Image Zoom) to capture the equivalent of a 60X zoom image. Sony says that its Clear Image Zoom is much fancier than the plain magnification often used in consumer cameras. When it was presented to us, the demo was pretty convincing, but we did not have time to do a side by side comparison.
Ubergizmo, Sony Cyber-Shot HX200V with 30X optical zoom