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Use of these gears may require specific port extensions and may not be available for all housings and lenses
Depth Rating 100m Port System N85 Weight Port Opening Diameter Port Diameter Body Material Anodized Aluminum Alloy Port Material Optical Glass Port Coating Port Shade Material Removable Port Shade Spare O-ring 90143 This item is non-returnable
Depth Rating 100m Port System N85 Weight Port Opening Diameter Port Diameter 4
The Nauticam Mini Extension Ring 17 can be used to add 17mm effective length to an N85 Port System
Dimensions: Dia132mm x 64mm
SC1770OS-Z Zoom Gear ~for Sigma 17-70mm F2.8-4DC Macro OS HSM N120 Use of these gears mayLimited stock is available. Zoom gears allow access to the mechanical zoom function 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 gear is for the Sigma 17 70mm F2. 8 4DC Macro OS HSM (Canon mount) lens. Product Manual PDF
