Changing the 3D View angle and tilt

Right-click the image and move the image to the view angle you want. In this operation you change the camera position about the point you are looking at. You can rotate the 3D View through 360 degrees and tilt the image in the same operation.

or

Use the rotate buttons and in conjunction with the tilt slider to set the angle and tilt individually.

The following figure shows the Zoom In/Out slider when used with rotate buttons.