a novel digital camera module includes an image capture device , a lens unit , a housing including an opening for receiving the lens unit and positioning the lens unit with respect to the image capture device , and a boot coupled the lens unit and the housing . in a particular embodiment , the boot includes an upper end and a lower end , each of which has a different outer perimeter . in another particular embodiment , a portion of the inner surface of the boot remains free of contact from the outer surface of the lens unit . in another particular embodiment , the lower end of the boot extends beyond the lower end of the lens unit .