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 understand that this os is very internet dependent, so I think this will be the first of many concessions to that concept. I don't know any webapps that play media files off of my hard drive, just like I don't know any webapps that open video or text docs off of my hard drive... or is google expecting me to upload to youtube and google docs first?