5.1.1

Chapter 21 3D compositing 934
Every camera in Motion has a focus oset 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 eld.
Focal plane
In-focus area
Note: Some complex objects, such as local 3D text and paint strokes with enabled Dynamics, are
not aected by depth-of-eld settings.
Depth of Field controls
Depth of Field controls, found in the Camera pane of the Inspector, allow you to set a range of
focus by changing the Near Focus and Far Focus parameters. Objects outside that range are
blurred. You can also modify the type and amount of blur used to render the out-of-focus eect.
Parameters in the Inspector
•
DOF Blur Amount: A slider to control the maximum amount of blur applied to out-
of-focus objects.
•
Focus Oset: A slider to set the distance from the camera where objects are in perfect focus.
•
Near Focus: A slider to set the nearest point of focus, measured in pixels as an oset from the
focal distance.
•
Far Focus: A slider to set the farthest point of focus, measured in pixels as an oset from the
focal distance.
•
Innite Focus: A checkbox that sets the far focus to innity, overriding the setting chosen in the
Far Focus slider.
•
Filter: A pop-up menu to set the type of blur algorithm used to render the out-of-focus areas.
Choices include Gaussian or Defocus. The Defocus setting renders a more realistic eect, but
may impact performance.
Tip: For best results, use Gaussian when setting up a scene, and Defocus for nal output.
•
Filter Shape: When the Filter pop-up menu is set to Defocus, this pop-up menu lets you choose
between a disk-shaped, or polygon-shaped render kernel. Dierent shapes produce subtly
dierent blur patterns simulating dierent types of camera lenses.
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