A compact, light-weight binocular includes motorized optical adjust. The binocular includes a pair of telescopic sections connected to a bridge section positioned between them. Each telescopic section includes an eyepiece lens group, a prism element, an intermediate focus lens element, and a fixed objective lens. A high-speed focus motor and a speed-reduction gear assembly are positioned on the bridge section and operably coupled to the intermediate focus lens elements. A user-operated focus control is selectively operated by a user to activate the focus motor and adjust focus of the binocular.