Sì, può cambiare il comportamento.
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Learn how to reduce screen motion in iOS 7.
iOS 7 uses a parallax effect to create the perception of depth on your Home screen and elsewhere. When this feature is on, you may notice that your:
Wallpaper, icons, and alerts shift slightly as you move your phone.
When setting a wallpaper in Settings > Wallpapers & Brightness, the photo or image will be slightly zoomed and cannot be scaled to fit to the screen.
You can change this behavior by enabling Settings > General > Accessibility > Reduce Motion.
Note: If zoomed, you will need to rescale your wallpaper to fit to the screen.
Additional Information
To learn more about iOS 7, refer to the user manual.
Vedi anche "Cosa sono alcuni nascosti o funzionalità non documentate in iOS 7? " qui.