The present invention generally relates to a motorized lens tray for a multi-focal length lens imaging system. In particular, a lens trays holds a variety of fixed focal length lenses, and a motorized mechanism moves the lens tray to align the desired lens with an imaging unit. This provides the flexibility to change focal lengths without the complexity, size, weight, and image quality degradation associated with a zoom lens. Certain embodiments of the invention are intended for use with digital cameras and cellular phones.