SpeedShot quickly takes a photo without any user operation. All you have to do is to launch the app. You wont miss the critical moment.
SpeedShot also works with launcher apps such as iWorkspace, Launch+, and Launch Center Pro. Just add SpeedShot with "speedshot:" URL.
You can launch other apps from SpeedShot, too. Please open Settings from your home screen to set up other apps. You need to know the URL schemes for the other apps.
If you have any questions, please feel free to contact me @unitkay (twitter).