Let the hive mind of Engadget get that for you.
"We need a digital camera that can be switched on and fire off that first shot fast. It's not a commonly tracked statistic on any review site, and nobody seems to have this information for every camera. We were hoping other readers could inform us as to what small digital cameras can fire off their first pics in under a second (ideally under half a second). It needs to be small, but mostly, just really quick in operation. Thanks!"
Convergence is the key. Some phones already have a radio (why not more?). The first major vendor to give phones a removable SD card slot so we can take our images and music from place to place will have a home run. It can be done now... Sony will spur the competition.