It is possible to use fewer than the maximum number of physical video input / cameras sources on each Sphere for stitching purposes.
- a single Sphere could use just 2 or 3 cameras instead of the maximum of 4 inputs
- two Spheres combined together into a single rig could use just 5, 6 or 7 cameras instead of the maximum of 8 inputs
NOTE: the Sphere will only send out a 360 degree video stream as described in this article. If your cameras and horizontal field of view do not cover the full 360 degrees, you would need to add blank panels or images to fill the remaining area not covered by live video and to allow a full 360 degree stitch for monitoring/streaming.