Interesting. I pointed my iPhone 3GS at my (pretty neat) digital watch and tapped the shutter release the instant I saw the seconds display change. I did this

Interesting. I pointed my iPhone 3GS at my (pretty neat) digital watch and tapped the shutter release the instant I saw the seconds display change. I did this 5 times. Each time, the seconds display in the photo was from just before it changed, and definitely before I tapped the button. This is a great idea, but it's a little strange that the photo that got stored was consistently from just before I had actually tapped the button rather than just as I tapped it. Either there's a hard-coded time compensation that's too generous (in this case longer than my hand-eye reaction time), or there's some logic at work that tries to intelligently weed out significant visual changes that occur at roughly the same instant that the shutter is released.