Horizontal: 180°; Vertical: 78°; Diagonal: 180°. Horizontal: 170°; Vertical: 75°; Diagonal: 175°. Tilt: 0°–90°. DORI (Detect, Observe, Recognize, Identify) is a standard system (EN-62676-4) for defining the ability of a person viewing the video to distinguish persons or objects within a covered area.
eBay