StarDot Technologies NetCam SC User Manual page 28

EXPOSURE GRID
When Auto Exposure is enabled, NetCam SC adjusts the
exposure of the image based on the average brightness of the pixels
located in the selected regions in the Exposure Grid. If you want the
camera to determine the exposure based on only the sky, you would
select the squares that apply to the sky (click the View Grid button to
see the grid over the image). Conversely, if you'd like the exposure
to be determined by the foreground, select only those squares. This is
comparable to the spot exposure on a traditional camera.
Page 28 NetCam SC Vandal Resistant Dome