In iOS 5 you get instant camera access from your lock screen. This lets you quickly pull out your iPhone (or iPad and iPod touch of course) and take pictures without having to unlock the iPhone or clicking on the camera app. Here’s how to do this:
And once you are in the camera app, you can use the Volume Up button as a shutter to take pictures.
I've also noticed that the camera records what the action was at the time the shutter button's pressed, perhaps even a moment before the button was pressed, as though it's recording a continuous buffer and reaching back into it a few frames.
There are also a couple video apps that record a continuous buffer, and when you "start" a recording, they start it retroactively, so you can press record after something neat happens and not miss video of the event itself. The one I use has the great "Philip K Dick"-esque name Precorder:
http://osxdaily.com/2011/10/14/camera-lock-screen-ios-5/
And once you are in the camera app, you can use the Volume Up button as a shutter to take pictures.
I've also noticed that the camera records what the action was at the time the shutter button's pressed, perhaps even a moment before the button was pressed, as though it's recording a continuous buffer and reaching back into it a few frames.
There are also a couple video apps that record a continuous buffer, and when you "start" a recording, they start it retroactively, so you can press record after something neat happens and not miss video of the event itself. The one I use has the great "Philip K Dick"-esque name Precorder:
http://www.airshipsoftware.com/precorder