The EVI-D70 offers a high quality 18 times zoom lens that, at its widest, offers 48 degrees of horizontal view, and at full zoom 2.7 degrees. The camera has a digital zoom feature that adds 12x power to the optical lens zoom. The user may store up to 6 predetermined positions of the pan/tilt/zoom for instant recall. The presets also include picture parameters like white balance and exposure features. These communication cameras provide an alarm function that can detect changes within the user-designated area of an image. When a change is noticed, the camera outputs an alarm trigger signal to external equipment via the VISCA protocol. The EVI-D70 camera can be remotely controlled via either RS-232C or RS-422. RS-422 offers control connections up to about 4000 feet. An RS-232C controller (a computer) can be up to about 150 feet from the camera. The camera, in extreme low-light conditions, is sensitive to infrared beams not visible to the human eye. The infrared-cut filter makes the came