Roll left
This function allows you to rotate the camera anticlockwise about the axis coming straight out from the screen.
To run this function: Choose View > Rotate image > Roll left, or...
The view is altered accordingly.
Roll Right
This function allows you to rotate the camera clockwise about the axis coming straight out from the screen.
To run this function: Choose View > Rotate image > Roll right, or...
The view is altered accordingly.