A video surveillance camera comprising a lens, lens holder, image sensor, base, and ring. The base has a plurality of slots, and the image sensor is mounted on the base. The lens is positioned in the lens holder, which has a plurality of arms with a pin. Each of the arms is positioned so that its respective pin is located in one of the plurality of slots in the base. The ring has a plurality of grooves for engagement with the pins and is rotatably engaged with the base such that rotation of the ring imparts axial movement to the lens relative to the image sensor.