User Manual

Focal Length
Specify the known constant focal length used to shoot the scene or provide a guess if the
Refine Focal Length option is activated in the Solve tab.
Film Gate
Choose a film gate preset from the drop-down menu or manually enter the film back size in the
Aperture Width and Aperture Height inputs. Note that these values are in inches.
Aperture Width
In the event that the camera used to shoot the scene is not in the preset drop-down menu,
manually enter the aperture width (inches).
Aperture Height
In the event that the camera used to shoot the scene is not in the preset drop-down menu,
manually enter the aperture height (inches).
Resolution Gate Fit
This defines how the image fits the sensor size. Often, film sensors are sized to cover a number
of formats, and only a portion of the sensor area is recorded into an image.
For example, a 16:9 image is saved out of a full aperture-sized sensor.
Typically, fit to Width or Height is the best setting. The other fit modes are Inside, Outside, or
Stretched.
Center Point
This is where the camera lens is aligned to the camera. The default is (0.5, 0.5), which is the
middle of the sensor.
Use Source Pixel Aspect
This will use the squeeze aspect of the pixels that is loaded in the image. HD is square pixels,
but NTSC has a pixel aspect ratio of 0.9:1, and Anamorphic CinemaScope is 2:1 aspect.
Disabling this option exposes Pixel X and Y number fields where you can customize the source
pixel aspect.
Auto Camera Planes
When enabled, the camera’s image plane and far plane are automatically moved to enclose the
point cloud whenever a solve completes. Sometimes, though, the solver can atypically fling
points off really deep into the scene, consequently pushing the image plane very far out. This
makes the resulting scene unwieldy to work with in the 3D views. In these cases, disable this
option to override this default behavior (or delete the offending tracks).
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