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!"
I've purchased the VCast LGVX8000. The EVDO network works great on it when I can connect. I live outside of Houston in Beaumont, Texas. I am a Verizon Customer and hope that they extend the service closer to my town so that connecting to EVDO won't be so difficult. It's great though when it works.