Pinhole lens for extr emely discr eet surveillance AXIS F1 004 Pinhole Sensor Unit has a pinhole lens for extremely discreet indoor video surveillance. It is ideal for use in retail stores, A TMs, and ticket and vending machines. It can be mounted in tight places, and behind a thin metal, plastic or glass panel with the included mounting bracket. AXIS F1 004 Pinhole offers a 57º horizontal field of view , a 720p video resolution and good low - light performance. It has a detachable 8 - m (26 ft) cable for connection to an AXIS F Main Unit.