Back in the iOS 7 beta, we noticed a feature that would focus your iPhone camera when you held down the volume button in landscape mode.
When I went to do the same thing yesterday while taking pictures of my Macbook Air’s trackpad (don’t ask), and instead of a nicely auto-focused picture, I got a bunch of pictures of my (not-moving) trackpad, inadvertently activating what Apple calls “burst mode.”
Here’s how to use it to get action shots on your own iPhone or iPad running iOS 7.