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784 Chapter 21: User Interface
Inter face
Zoom E xtent s —Centersandmagnifiesviews
so all the visible objects in the scene are show n in
a single viewport.
Objects can be excluded from zoom extents all if
theIgnoreExtentsboxisturnedonunderObject
Properties.
Zoom Ex tent s Selected—Centers and
mag nifies views so just the selected objects or
sub-object selections in the scene are shown in
a single viewport. If no objects are selected, the
effectisthesameasZoomExtents.
Field of View Flyout
Activate Perspective viewport. > Status bar > Viewport
controls > Field of View flyout
The Field of View flyout is available only for
Perspective viewports. The flyout has two options:
• Field of View (FOV) (page 3–784) :Adjusts
the amount of the scene that is visible in a
viewport and the amount of perspective flare.
•
Zoom Region (page 3–785) :Magnifiesa
rectangular area you drag within a viewport.
Fi eld-o f-Vie w Bu t t on
Activate a Camera viewport. > Viewport controls >
Field-of-View
Activate a Perspective viewport. > Viewport controls >
Field-of-View (on Field-of-View flyout)
Field-of-View (FOV) adjusts the amount of the
scene that is visible in a viewport and the amount
of perspective flare. The effect of changing FOV is
similar to changing the lens on a camera:
• AstheFOVgetslarger,youseemoreofyour
scene and the p erspective becomes distorted,
similar to using a wide-angle lens.
• AstheFOVgetssmaller,youseelessofyour
sceneandtheperspectiveflattens,similarto
using a telephoto lens.
Above: Narrow field of view
Below: Wide field of view
Although the effect of Field-of-View appears
similar to a zoom, the perspective is actually
changing, resulting in increased or decreased
distortion in the viewport.
In a Perspective viewport, Field-of-View defines
the width of your v iew as an angle with its apex
at your viewpoint and the ends at the sides of the
view.
In a Camera viewport, Field-of-View controls the
w idth of the area a camera views, and represents
the arc of the camera’s horizon in degrees. For a
selected camera, you can adjust its
FOV and Lens
parameters (page 2–1218)
directly to fine-tune the
FOV you set in the viewport. See “To use FOV with
Camera parameters” in the following procedures.
Procedures
To adjust the field of vi ew in a viewpor t:
1.
Activate a Perspective or Ca mera viewport.
2. Click Field-of-View.