ADOBE AFTER EFFECTS 7.0
User Guide
182
Note:
If you change the settings of the Zoom or Focus Distance options in the Timeline panel, the Focus Distance value
becomes unlocked from the Zoom value. If you need to change the values and want the values to remain locked, then use
the Camera Settings dialog box instead of the Timeline panel. Alternatively, you can add an expression to the Focus
Distance property in the Timeline panel: Select the Focus Distance property, and choose Animation > Add Expression;
then drag the expression pick whip to the Zoom property.
Aperture
Specifies the size of the lens opening. The Aperture setting also affects the depth of field—increasing the
aperture increases the depth of field blur. When you specify new values for Aperture, the values for F-Stop change
dynamically to match it.
F-Stop
Represents the ratio of the focal length to aperture. Most cameras specify aperture size using the f-stop
measurement; thus, many photographers prefer to set the aperture size in f-stop units. When you specify new values
for F-stop, the values for Aperture change dynamically to match it.
Blur Level
Controls the amount of depth-of-field blur in an image. A setting of 100% creates a natural blur as
dictated by the camera settings. Lower values reduce the blur.
Film Size
Specifies the size of the exposed area of film, which is directly related to the composition size. When you
specify new values for Film Size, the Zoom value changes to match the perspective of a real camera.
Focal Length
Specifies the distance from the film plane to the camera lens. In After Effects, the camera’s position
represents the center of the lens. When you specify new values for Focal Length, the Zoom value changes to match
the perspective of a real camera. In addition, the Preset, Angle of View, and Aperture values change accordingly.
Units
Specifies the units of measurement in which the camera setting values are expressed.
Measure Film Size
Specifies the dimensions used to depict the film size.
To adjust a view using the camera tools
Use the camera tools to adjust the camera view. Use the Orbit Camera tool
to rotate the current 3D view around
the point of interest. Use the Track XY Camera tool
to adjust the 3D view horizontally or vertically. Use the Track
Z Camera tool
to adjust the 3D view along the line leading to and from the point of interest or, if you are using an
orthogonal view, to adjust the scale of the view. These tools are specifically for manipulating the 3D views and do not
become available until you create a 3D layer, a camera, or a light.
1
In the Tools panel, select the camera tool you want to use.
Hold down the mouse button on a camera tool to see all of the available tools.
2
In the 3D View menu, choose the camera view you want to adjust.
3
Drag in the Composition panel. You can drag outside the panel once you’ve begun dragging within it.
To change axis modes
Axis modes specify on which set of axes the layer, light, or camera is transformed.
❖
In the Tools panel, click the icon for one of the following modes: Local Axis mode
, World Axis mode
, or
the View Axis mode
.
Local Axis mode
Aligns the axes to the surface of a 3D layer.
World Axis mode
Aligns the axes to the absolute coordinates of the composition. Regardless of the rotations you
perform on a layer, the axes always represent 3D space relative to the 3D world.
