Solution
You can display a grid in the viewfinder to help you check the camera tilt or compose the shot.
1. Set the camera's power switch to <ON>.
2. Press the <MENU> button to display the menu screen.
3. Press the <

> button to select the [

] tab.
4. Turn the <

> dial to select the [

] tab.
5. Turn the <

> dial to select [Viewfinder display], then press <

>.
6. Turn the <

> dial to select [VF grid display], then press <

>.
7. Turn the <

> dial to select [Enable], then press <

>.
When you exit the menu, the grid will appear in the viewfinder.
REFERENCE
You can display a grid on the LCD monitor during Live View shooting and before you start shooting a movie