The invention relates to a lens mounting assembly (10) for positioning a lens relative to an image sensor (14). The lens mounting assembly (10) has a lens barrel (20) for holding a first lens assembly and a lens mounting (12) having an image sensor (14) mounted thereon. The lens barrel (20) and lens mounting (12) are provided with a mating connection which allows the first lens assembly to be moved along an optical axis in order to adjust its focus on the image sensor (14). A second lens assembly (26) for adjusting the focus on the image sensor (14) during use of the lens is also provided. An alignment projection 28 is provided on at least one of the first or second lens assemblies in order to mate with a portion of the other of the first or second lens assemblies to allow direct optical alignment of the first and second lens assemblies with the image sensor (14).
A method of positioning a lens or lens assembly relative to an image sensor (14) is also provided.