The amount of light required in the scene is optimized simply by pointing AXIS T90B40 wherever it is needed. The default beam angle is 10 degrees. Three diverging lenses are included (35°, 60° and 80°), and a 120° diverging lens is available as an optional accessory. The holographic lens technology distributes the amount of light evenly throughout the whole beam, without any hot spots. The photocell sensitivity and illumination intensity can be fine-tuned remotely. AXIS T90B40 is turned on and off either by the built-in photocell or through the camera I/O port or a PIR sensor.