Ikelite 5503.90 Dome Port For Canon 17-85 EF-S Lens

AF/MF and image stabilization switches can not be changed when in the housing. No clamp or attachment is required to zoom the lens. As the port slides over the lens, rubber contact pads attached to the internal port gear sleeve will contact the lens zoom ring. Once the port locks are secured, the knob on the side of the port is used to zoom the lens.