Nauticam Cinema System Gear Set for Sigma 17-70mm F2.8-4 DC Macro OS HSM
Zoom and focus gears allow access to the mechanical zoom/focus functions of supported lenses. Use of this gear may require the use of additional port extensions or adapters. Check the Port Chart for more details.
This zoom/focus gear set is for the Sigma 17-70mm F2.8-4 DC Macro OS HSM lens with Nauticam Cinema System Housings.