Aquatica 49028 Focus Gear for Canon RF 15-35mm f/2.8L IS USM (Requires Port Extension with Focusing Knob)

Mount this Aquatica Focus Gear onto the focus ring of the Canon RF 15-35mm f/2.8L IS USM lens to enable adjustments when the lens is inside a compatible port on an Aquatica underwater camera housing. This gear requires the use of a port extension with a focusing knob. Consult your housing's lens chart for compatibility info.