STEPS
TOOLS
Go to "Settings"-App
Pick the category "General"
Move on to "Accessibility"
Chose "Reduce Motion" and activate it
Now you got rid of the moving background in iOS 7. Additionally this will save some battery life and bring you the great new transition effect for apps opening and screen unlocking.
1.0 iOS 7 iDevice

How to enable fading transition effect in ios 7

Moving background in iOS 7 might be annoying. It's also consuming some battery life. Moreover zoom motions could become slow on older devices. You can make this a lot smoother with fading transitions!