Imitation is the most sincere form of flattery
In this patent application (via the New Scientist), a system of two cameras emulates the human vision. The whole field of view of the human eye is not of constant resolution. We have a 4 degree high resolution central spot in the retina called the fovea, and our brain builds a high resolution composite view by moving the eye back and forth. The system in this patent application does something similar – a low-resolution wide-angle camera takes the whole surveilled area at one time, and an algorithm controls a tele-lens camera that sweeps parts of the field of view of the other camera, giving priority to areas where movement has been detected, building a high-resolution composite image.