Depth of Field
In the real world, cameras have a limited range of focus. Objects within that range appear
sharp, and the further outside that range an object is, the blurrier it appears. This effect
is used by camera operators to help limit which part of a scene the viewer pays attention
to. Motion allows you to simulate that phenomenon, thereby increasing the sense of
depth in a 3D scene.
Every camera in Motion has a focus offset that determines the precise location of perfect
focus. Stretching away from that point in either direction are near and far focus points,
which determine the range of the depth of field.
Focus offset
Depth of field
Note: Some complex objects are not affected by depth-of-field settings. These objects
include local 3D text, paint, particles, and replicators. The objects in these groups are
likely spread out along the Z axis, but the camera cannot measure their relative depth
and thus cannot accurately render depth of field.
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Chapter 21
3D Compositing