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!"
Every once in a while you hear this GREAT new breakthrough in battery technology that increases its capacity by hundred times!! while shrinking its size down to hundred times!
I'll believe when I see one at the local grocery for sale.