The Back Plate pane lets you select a background texture (containing an image or video clip) to be displayed on a camera’s background plane.
The background plane is a separate plane used only for projecting images or video clips. The size of the background plane matches the camera’s viewing area and remains a part of the camera’s view, even with the 2D magnifier, and the Turn Table options.
The Back Plate pane consists of two areas:
Back Plate pane A. Image Preview area B. Image Display settings