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!"
Here's an idea (someone's probably already said it but I don't want to read through all 4 pages of comments): just stick and LED on the shift key, and make it so that if you hold down shift for, say, 3 seconds, it automagically turns into caps lock. Small-keyboard supporters get their real estate, and caps lock supporters get all of their uppercase goodness. And if people don't want to have to change the software on the computer, I'm sure it wouldn't be that hard to attach a timer to the shift key and simply have it send a caps lock signal if it's held down.