I'm going to buy a CHDK capable camera soon. I'm wondering, how can I know what sort of shutter lag to expect from the camera I buy? I'm not talking about the lag when when its focusing, etc, since I always do half click first on any shot I ever take (this seems to be what I generally find on spec sheets). I'm talking the amount of shutter lag from when the button is already half clicked, and you click it the rest of the way. Or more importantly, when using the usb remote, the amount of time the signal is sent till the time it goes off.
One of the biggest things I am hoping to use the chdk camera for is for high speed photography, triggered by sound triggers, laser triggers, pressure triggers, etc. I know normally this type of photography is done in a dark room, with camera in bulb mode, and a flash. However i'm hoping to be able to take advantage of the fast 1/10,000+ shutter speeds to take some nice high speed photos, outdoors and other unique places, without the need for a dark room setup.
I've tried reading specs on the prefocused lag of a few cameras, but that info is very hard to find and often varies greatly (one site said a particulat camera had a .06 lag and another said .02 for the same camera). And that's just with the stock firmware though, I don't know if chdk is able to make it any faster or not, since afterall I've heard chdk on its own, just using its own motion detector, is fast enough to capture lightning. How can I actually know how much lag to expect from a particular camera to help decide which one to get? Do any of these canon powershots have a short enough shutter lag to even make somewhat high speed photography realistic, or will they all likely have too much lag?