Nimar Zoom Gear for Sigma 17-70mm f/2.8-4 DC Macro HSM/C Lens in DPG203 or DPA203 Lens Port

Zoom smoothly and seamlessly underwater with this Zoom Gear from Nimar mounted on your Sigma 17-70mm f/2.8-4 DC Macro HSM/C lens. Designed to fit snugly around the zoom control of your lens, this gear interacts with the zoom control interface of your underwater housing. The zoom gear is compatible with DPG203 and DPA203 lens ports.