ADOBE AFTER EFFECTS 7.0
User Guide
493
Camera System and Camera Position controls for the Card Dance effect
Camera System specifies whether to use the Camera Position, Corner Pins, or Comp Camera controls. Comp
Camera tracks the composition's camera and light positions and renders a 3D image on the layer.
Adjust the following Camera Position controls to specify the camera position:
X Rotation, Y Rotation, Z Rotation
Rotate the camera around the corresponding axis. Use these controls to look at
the layer from the top, side, back, or any other angle.
X, Y Position
Specifies where the camera is positioned in (x,y) space.
Z Position
Specifies where the camera is positioned in z space. Smaller numbers move the camera closer to the layer,
and larger numbers move the camera away from the layer.
Focal Length
Specifies the zoom factor and is like a camera’s zoom lens. Smaller numbers zoom the camera lens out,
and larger numbers zoom the camera lens in.
Transform Order
Specifies the order in which the camera rotates around its three axes, and whether the camera
rotates before or after it is positioned by using the other Camera Position controls.
Corner Pins controls for the Card Dance effect
Corner pinning is an alternative camera control system. Use it as an aid for compositing your layer into a scene.
Upper Left Corner, Upper Right Corner, Lower Left Corner, Lower Right Corner
Specify the location of each of the
four corners of your layer.
Auto Focal Length
Specifies the perspective of the effect during the animation. When Auto Focal Length is off, the
Focal Length you specify is used to find a camera position and orientation that positions the corners of the layer at
the corner pins. If this isn’t possible, the layer is replaced by its outline, drawn between the pins. When Auto Focal
Length is on, the Focal Length required to match the corner points is used, if possible. If not, it interpolates the
correct value from nearby frames.
Focal Length
Overrides the other settings if the results you’ve obtained aren’t what you need. If you set Focal Length
to something that doesn’t correspond to what the focal length would be if the pins were actually in that configuration,
the image may look odd (strangely sheared, for example). But if you know the focal length that you are trying to
match, the Focal Length control is the easiest way to get correct results.
Lighting controls for the Card Dance effect
Light Type
Specifies the type of light you want to use. When a light is at a great distance from an object, all the light
rays strike the object from virtually the same angle. Sun rays, for example, are parallel by the time they reach the
earth. As a light source moves closer to the object, the rays strike the object from an increasing number of angles.
Distant Source is similar to sunlight and casts shadows in the one direction. Point Source is similar to a light bulb
and casts shadows in all directions. First Comp Light uses the composition’s first light layer, which can use a variety
of settings.
Light Intensity
Specifies the power of the light. The higher the value, the brighter the layer. Other lighting settings
affect the overall light intensity as well.
Light Color
Specifies the color of light.
Light Position
Specifies the position of the light in (x,y) space.
Light Depth
Specifies the position of the light in z space. Negative numbers move the light behind the layer.
Summary of Contents for AFTER EFFECTS 7.0
Page 1: ...Chapter 1 User Guide...
