A method of controlling one or more z-cameras from a set of cameras to obtain image streams capturing an object of interest; it includes receiving position data and object data corresponding to the object of interest; determining a subset of the one or more z-cameras having a zone of potential coverage comprising the object of interest; computing the relative position of the object of interest with respect to the center of the field of view of the z-camera; computing a zoom factor calculated by determining a narrowest field of view angle of the z-camera that encompasses the object of interest; and generating transmission commands for the subset of the one or more z-cameras based on the computed zoom factor.