On the Output tab, you can adjust the controls for the virtual camera created by the CameraTracker node. In most circumstances, you shouldn’t need to touch these at all as they provide additional ways to setup the virtual camera which CameraTracker automatically creates.
• Translate - Define transform values for the virtual camera’s position.
• Rotate - Define transform values for the virtual camera’s rotation.
• Focal Length - Set the focal length for the virtual camera.
• Aperture - Set the aperture angle in degrees for the virtual camera.
• Window Translate - Set the center point offset for the camera projection.
• Window Scale - Set the relative pixel scaling value for the camera projection.
TIP: You might want to use the virtual camera output settings when you want to smooth a noisy solve. You can use the Curve Editor to see your values and right-click Interpolation > Smooth to smooth them. You can also smooth the focalLength result on the Output tab then copy over to the Solver tab to perform a known focal length solve. This way you’re guaranteed to get a smooth change in focal length.