9
Common Camera Parameters 1377
When you change the Aperture Width value in the
RenderScenedialog,youalsochangethevaluein
the Lens spinner field. This doesn’t change the
view through the camera, but it does change the
relationshipbetweentheLensvalueandtheFOV
value, as well as the aspect ratio of the camera’s
cone.
FOV Direction flyout—Lets you choose how to
apply the field of view (FOV) value:
•
Horizontal—(The default.) Applies the
FOV horizontally. This is the standard way to
set and measure the FOV.
•
Vertical—Applies the FOV vertically.
•
Diagonal—Applies the FOV diagonally,
from one corner of the viewport to the other.
FOV—Determines how wide an area the camera
views (field of view (page 3–937)). When FOV
Direct ion is horizont al (the default), the FOV
parameter directly sets the arc of the camer a’s
horizon (page 3–953) , measured in deg rees. You
canalsosettheFOVDirectiontomeasureFOV
vertically or diagonally.
You can also adjust the field of view interactively in
a camera v iewport (page 3–745) by using the FOV
button.
Or thogr aphic Proj ection—When on, the camera
view looks just like a User view. When off, the
camera view is the standard perspective-like
view. While O rthographic Projection is in effect,
the viewport navigation buttons behave as they
ordinarily do, except for Perspective. Perspective
function still moves the camera and changes the
FOV, but the Orthographic Project ion cancels the
twoout,soyoudon’tseeanychangeuntilyouturn
off Orthographic Projection.
Stock Lenses group
15mm, 20 mm, 2 4mm, 2 8mm, 35 mm, 5 0mm, 8 5mm,
135mm, 200mm—
These preset values set the
camera’s focal length in millimeters.
Ty pe—Changes the camera’s type from a Target
camera (page 2–1371) to a Free camera (page
2–1370),andviceversa.
Note: When you switch from a target camera to a
free c amera, any animation applied to the camera’s
target is lost, because the target object goes away.
Show Cone—Displays the cone (actually a
pyramid) defined by a camera’s field of view. The
cone appears in the other viewports but does not
appearinacameraviewport.
Show Horizon—Displays the hor izon line. A dark
gray line appears at the level of the horizon in the
camera’s viewport.
Environment Ranges gro up
Near R a nge a nd Far Ra nge—Determine the near
and far range limits for the atmospheric effects set
on the Environment panel (page 3–272).Objects
between the two limits f ade between the Far % and
Near % values.
Show—Displays rectangles within the camera’s
cone to show the Near and Far range settings.