Requires iOS 7
Also available, Minimal Camera 2 (iOS 8)
Camera tweak for the minimalist. MinimalCamera lets you toggle the camera controls on or off increasing the amount of screen real estate when you are taking a photo or video.
To toggle the camera controls on or off, simply press and hold the screen until they are hidden, or shown.
Once the controls are hidden, simply tap the screen to take a picture, video mode is the same, just swipe into video mode, and then tap to start recording, and then tap again to stop.
Enable / Disable in Settings.app