The focal plane is the plane at which objects will be in focus when rendered. The focal plane can only be adjusted for a perspective camera.
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Note:
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Clipping planes are not used in RayTracing.
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How to Use
Select Cameras > Adjust clipping plane, or click its icon.
To set the clipping planes for a camera, the window associated with the camera must be current.
One of the following four prompts is displayed, depending on which window is current (indicated by a white border):
Enter TOP window clipping plane positions (near
[LEFT BUTTON], far [RIGHT BUTTON]): (99.8, -100.0)
Enter FRONT window clipping plane positions (near
[LEFT BUTTON], far [RIGHT BUTTON]): (-99.8, 100.0)
Enter RIGHT window clipping plane positions (near
[LEFT BUTTON], far [RIGHT BUTTON]): (99.8, -100.0)
Enter PERSP plane positions (near [LEFT], focus
[MIDDLE], far [RIGHT]): (0.2, 18.4, 200.0)
For an Orthographic Window
When setting planes for an orthographic window, you must specify where you want the near and far planes by clicking in a different orthographic window.
Click the appropriate button and move to the new position you selected for the plane.
The position of the clipping plane is indicated by a line. When you click and drag the mouse button, the line is labeled either NEAR or FAR. The line for the NEAR plane is solid, and the line for the FAR plane is dashed.
To turn off the display of the clipping planes, select another menu item.
For the Perspective Window
Perspective clipping planes are set by typing the values for the NEAR, FAR, or FOCAL positions (the focal length of the camera in the perspective window) from the keyboard. Alternatively, you can set the clipping and focal planes by clicking the appropriate button in any window and dragging.
To get visual feedback, use DisplayTgls > Object Toggles > Camera- , set the Frustum Display option to Full, and dolly in/out in any orthographic window to see the perspective camera's near, far, and focal frustum planes.
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