The new Parallax feature is one of the more interesting design changes in iOS 7, but many find it to be motion sickness inducing or just downright distracting. If you find yourself in that group of users, the good news is that you can easily turn it off. Simply go into Settings, General, Accessibility and you can the option listed as Reduce Motion; toggling this ON will disable the parallax effect throughout iOS 7. As an added bonus, turning this off may even help you conserve a bit of battery life by reducing the use of the accelerometer and gyroscope.