Usage
Click the roll button to activate it. By holding the middle mouse button down while moving the mouse left or right, the camera in the currently active window will rotate counter clockwise or clockwise until you press the left mouse button. If keyboard is active, a numerical entry is required. You will then receive the following prompt in the status area:
roll ?
Comments
All rolls are relative to the current position of the camera. Using the roll input box, an absolute roll angle can be entered.
See also
move, track, zoom, pan, tilt
Camera as viewed from the side