This is the document camera screen. The buttons on the right of the screen control the document camera. "Zoom Near" and "Zoom Far" control how much area is seen by the camera. "Max Image" zooms the image all the way out to show the entire working surface. "Focus +" and "Focus -" can be used to override the camera's auto-focus if needed. "Iris Open" and "Iris Close" can be used to brighten or darken the image if needed. Normally the camera's automatic exposure will provide the best image. The video image can be expanded to fill the screen by touching the image.