Your cart is currently empty.
SKU # 21230
The Nauticam Extension Ring 30 with Focus Knob is part of the N120 Port System and can be used to add 30mm effective length to an N120 Port setup.
This extension ring features a focus knob that can be used to operate supported optional focus or zoom gears.
See Port Chart for more details on choosing the correct extension, port and focus/zoom gear.