2017

Moving the Near and Far Clipping Planes
To move the near and far clipping planes:
1 From the View box, select Side or Top, depending on how your camera is positioned.
Either of these views profiles the camera so that the near and far clipping planes are clearly visible.
2 From the Camera menu, on the Basics tab, enter a value in the Near field to edit the position of the
near clipping plane.
The value in the Near field corresponds to the position of the near clipping plane, in pixels, from the
front of the camera. The farther away that the near clipping plane is placed, the higher the value. The
default value is 1. Any object between the camera and the near clipping plane is outside the camera
frustum and does not get processed in the final result.
3 Enter a value in the Far field to edit the position of the far clipping plane.
The value in the Far field corresponds to the position of the far clipping plane, in pixels, from the front
of the camera. The lower the value, the closer the far clipping plane is placed. The default value is
10000. Any object positioned behind the far clipping plane is outside the camera frustum and does
not get processed in the final result.
Moving the 3D Camera
Objects in the scene can be recorded from an arbitrary position as determined by the orientation of the
camera in world space. The position of the camera can be moved left or right, up or down, or closer or farther
from the central point of interest. The values for camera position are expressed in pixels relative to the
aiming target.
To change the position of the 3D camera:
1 From the View box, select Front, Side, or Top, depending on how your camera is positioned, to provide
a clear view of the camera motion.
2 From the Camera menu, on the Basics tab, modify the Position X, Y, and Z fields.
You can also animate the camera using keyframes and the Channel Editor.
Adjusting the Aim of the 3D Camera
The aiming target is the point in world space at which the camera is directed. The aiming target is always
at the centre of the camera's frustum. Changing the position of the camera’s aim causes the orientation of
the frustum to change. You can take advantage of the relationship between the aim and the frustum to make
the camera follow a moving object. To do this, animate the aim while keeping the camera in a fixed position.
You can adjust the aim only with an Aim, or Aim and Up camera.
To adjust the aim of the 3D camera:
1 From the View box, select Front, Side, or Top, depending on how your camera is positioned, to provide
a clear view of the camera motion.
2 Do one of the following:
■ From the Camera menu, on the Aim/Up tab, modify the Aim X, Y, and Z fields.
■ Move the aiming target by dragging.
You can also animate the aim using keyframes and the Channel Editor.
640 | Chapter 15 Compositing in 3D Space with Action