Positioning the Virtual Camera
The camera position tab shows a real time update of the current camera position. (When the Video signal is On, the update frequency is lowered, to lower the system overhead.)
To edit the virtual camera position directly, click the Edit Position button. The light next to it will go red, to warn that the virtual camera is not being controlled directly by live tracking data.
The camera positions can either be entered by highlighting the number and typing it in, or by clicking and dragging up or down in the value box. Hold down Control while clicking and dragging for fine grained control, or scroll with the mouse wheel for high speed motion.
If you are trying to set a specific offset, such as positioning a camera that is on the second floor of a virtual set, you can set the offset by adjusting the camera position while watching the offset update under the Coordinate System menu to the right.
Free Form Camera Motion
While the Edit Position button is enabled, you can also move the camera directly within the virtual scene using the same Maya-style controls used by the Observer View camera. Tilt is supported, but will not be incorporated into the offset after the Edit Position button is disabled.
Going Back to Live Data
To return to using real time camera tracking data, disable the Edit Position button. The red light next to it will go out, to show that Previzion is using real tracking data. The XYZ offset and Pan offsets that were set using the direct virtual camera manipulation will be preserved, but the tilt will revert to the real camera data.
Setting Iris and Depth of Field
The iris and depth of field values can be manually edited using the controls at the bottom of the Camera panel. The default depth of field value of 1.0 is the optically correct version, and increasing or decreasing this value leads to greater or lesser amounts of depth of field in the virtual background.