CamPoint helper objects
are used by the
utility to reproduce in a camera the same
settings (position, roll, and FOV) that were used by a real-world
camera to shoot a background image. This allows you to view your
scene from the same perspective as the background image, which is
a key step to mixing computer-generated and photographically-generated
images in a single composited shot.
Place CamPoint objects
in the scene at locations that will be visible in the background
photograph. By comparing the X/Y/Z position of several camera point
objects to their analogous positions in a background image, the
Camera Match utility is able to determine the real-world camera’s
settings, and use these settings to either create a new camera or
move/reset an existing camera to match them.
Clicking CamPoint displays
the Keyboard Entry and Camera Match Point rollouts, which you use
to create and name the camera points.
To create a camera match point:
- On the Create panel, click (Helpers).
- Choose Camera Match from the drop-down
list, then on the Object Type rollout, turn on CamPoint.
You are now ready to create a camera point.
- Click in the viewport to create a CamPoint
helper object. Alternatively, you can use the keyboard to create
a CamPoint object by expanding the Keyboard Entry rollout, entering
values in the fields, and then clicking Create.
To position camera match points in your
scene, do one of the following:
- Create your camera match points using
keyboard entry. Use this if you have accurate actual measurements
of the locations of the points.
- Build geometry that matches your scene
geometry, and then snap the points to the geometry using snaps.
Use this technique when you don’t have measurements and can approximate
- Create your camera match points interactively,
and then use Transform Type-In to move them to the correct locations.
Name and Color rollout
Lets you name the CamPoint
object before you create it. If you want to name it after you create
it, change its name in the Modify panel.
Keyboard Entry rollout
- X, Y, Z
Let you enter the X,
Y, and Z coordinates where a CamPoint object will be inserted. Field
values reflect the current Unit setup.
Inserts the CamPoint
object into the scene.
Camera Match Point rollout
- Show Axis Tripod
Controls whether an axis
tripod is displayed with the Camera point object. Default=on.
- Axis Length
Controls the length of
the axis tripod. When Show Axis Tripod is on you can watch the tripod change
length in the viewport while you adjust the spinner arrows. When
Show Axis Tripod is off, you can still make adjustments the Axis Length
value, but the axis tripod won't be displayed.