Camera settings relate to the physical aspects of the camera used on set. Accurate physical camera data produces a better camera track and solution.
| 1. | Select the motion type of the on set camera from the CameraTracker tab Camera Motion dropdown menu. This is linked to a control of the same name on the Settings tab. |
• Rotation Only - select this option if the camera is static and rotating, for example, if you’re using a tripod mounted camera for nodal pans.
• Free Camera - select this option if the camera is both translating and rotating.
• Linear Motion - select this if the camera has a straight, linear path.
• Planar Motion - select this if the camera has a flat path, moving in a two-dimensional plane only.
| 2. | If you have already used a separate LensDistortion node (see Working with Lens Distortion on page 1) to remove lens distortion from your footage, you can leave the Lens Distortion control set to No Lens Distortion. |
Otherwise, set Lens Distortion to Unknown Lens before you solve the camera position to force CameraTracker to calculate the distortion.
| 3. | Select the Focal Length type for the camera from the dropdown menu: |
• Known - select this option if the focal length is available and enter a value in the Length control.
• Approximate Varying - select this option if an approximate focal length is available and enter keyframed focal length values in the Length control.
• Approximate Constant - select this option if an approximate focal length is available and there is no zoom, and enter a focal length value in the Length control.
NOTE: CameraTracker attempts to refine the focal length during the solve if you select an Approximate option.
• Unknown Varying - select this option if the focal length is unknown and changing.
• Unknown Constant - this is the default option. Use this option if the focal length is unknown and there is no zoom.
| 4. | Either choose a Film Back Preset from the dropdown to populate the Film Back Size controls, or if your camera isn't in the list, enter the Film Back Size manually. |
TIP: You can add your own defaults by editing the ../NukeScripts/camerapresets.py file in the Nuke installation package.