Disassembly of the lens core is easy but reassembly is harder, simply because of the many possible wrong orientations of the components. Follow the remaining steps very carefully.

The lens comprises four components: the inner silver barrel which holds the first lens and the protective shutter, the second lens carrier, a zoom control barrel, and the aperture and image stabilisation unit.

The zoom control barrel is the only one of these which rotates. The others slide in and out, controlled by pins located in helical slots.

The engraved bezel on the front of the inner silver barrel can be eased off to reveal the lens cover mechanism but would be easily bent in the process and would have to be glued back on.