The group at CNET have a review on the Casio Exilim EX-Z600 where they write, 'The Casio Exilim EX-Z600 is generally responsive, with respectable start-up time regardless of whether the camera is turned on using the power button or the direct record/playback buttons. It zips along quite nicely from shot to shot, although using the flash--with the exception of the special Rapid Flash, that fires three times in a little over a second--slows the time between shots to a laggardly 4.7 seconds. But there's minimal shutter lag, and under really dark conditions, the AF locks in pretty quickly. High-speed continuous shooting is almost instantaneous, although capture is limited to three consecutive frames. For more than three images, the capture rate slows to a little less than one frame per second.'