Aquatica 18717 Zoom Gear for Tokina 10-17mm f/3.5-4.5 DX Fisheye Zoom in Lens Port on Underwater Hou

Adjust and enhance your view with this Aquatica Zoom Gear, which is designed for use on the Tokina 10-17mm f/3.5-4.5 DX Fisheye Zoom lens (new modified type) in a compatible port on an underwater housing. Mount the gear on the zoom ring of your lens, and then connect it to the zoom control knob of the housing compatible with your camera. Once beneath the surface, you'll be able to zoom in and out with the lens using the housing's exterior control.