Use check boxes on Control panel for visualization options. When 'Show camera' box is checked the camera motion is transfered to graphical representation of camera, so camera animation path for can be observed. The wire-framed cone shows field of view angle of camera.
Rotate: Left-Mouse-Drag, Pan: Ctrl+Left-Mouse-Drag,
Zoom In/Out: Shift+Left-Mouse-Drag, or Mouse-Wheel
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