In addition to the high resolution, it is important that motorized zoom lenses are used for long distances. Zoom, focus and iris functions are controlled via motors. In addition, there are functions such as auto-iris or auto-focus.

Since surveillance can takes place during day and night, it is important that the lenses are IR-corrected. IR-corrected zoom lenses are designed in such a way that there is no focus shift when IR illumination is used during night surveillance instead of visible light