Femto Bolt RGB Camera Focal Point

Do you guys have a dimension for the color camera’s focal point on the Femto Bolt on the diagram below? Looking to understand how far away it is from the camera’s front face.

Source: Femto Bolt Hardware Specifications

Per the resource on the Femto Bolt’s Coordinate System, it’s stated that the focal point is the camera’s Z axis zero as shown here, but we’re seeing a static offset from the front of the camera for pose estimation via Apriltag.