Ikelite Zoom Gear for Sigma 10-20mm f/4-5.6 EX DC HSM Lens in DL Port

By connecting this Ikelite 5509.33 Zoom Gear to the DL port mount of a compatible underwater camera housing, you will enable zoom control when your Sigma 10-20mm f/4-5.6 EX DC HSM Lens is installed. For complete compatibility information, please see the DL Port Chart.