Van imaging-resource.com:
"Shutter Lag and Cycle Time: Reasonably good shutter response, particularly for a long-zoom model, and very good shot to shot performance. The FZ20 for the most part does pretty well in the speed department, provided that you avoid its 9-area autofocus mode. When operating in its 9-area AF mode, the FZ20's shutter lag is positively sluggish, ranging from 1.35 - 1.48 seconds. (Slow even when compared to other long-zoom digicam models.) In any other AF mode though, the shutter lag ranges from 0.53 - 0.99 second as the zoom is varied from wide angle to telephoto. The lag for wide angle focal lengths is quite short, while that for telephoto focal lengths is on the long side of average, but still not bad for a long-zoom digicam. Manual focus lag time is really excellent, at 0.08 second, and prefocused, it's positively blazing, at 0.038 second. Cycle times are very fast. In manual-focus single-shot mode with a sufficiently fast card (we tested with a Lexar 32x SD card), it can capture large/fine JPEG files to the memory card nonstop, at about 0.86 second per shot. With slower cards, it'll make you wait a little every 3-4 shots, but it's still very fast. So... If you avoid its 9-area AF mode (which is really best suited to landscapes or still life shots), the Panasonic FZ20 is a reasonably responsive camera, with excellent cycle times and buffer capacity. And, if you can live with manual focus or prefocusing prior to your shots, the FZ20 would be great for fast-paced action."