A little while back, a promising app hit a popular crowd-sourcing site looking for funding. GESTURES camera offers a completely different approach to the current camera apps. Instead of adding menus and layers upon layers of settings a tweaks, it takes everything back to its simplistic core. The only controls are your fingers, and the only thing on your screen is what your camera sees.
App Store: https://itunes.apple.com/gb/app/gestures-camera/id825653391?mt=8