Another new but unheralded feature allows you to take a still picture while in the midst of capturing a video. To do that, all you need to do is tap the white button on the bottom of the screen while recording a video. The still pictures go right to your picture roll and you can take as many pictures as possible and still tap-to-focus or zoom in at the same time.
Take a look at the video below to check out the zooming capabilities on iOS 7. And we also have a still picture for you to look at, which was snapped while a video was being recorded.
source: YouTube, 9to5Mac, iDownloadBlog via Gizmodo