Ring to control the zoom of the Sigma lens in use inside the housing. Built in light but resistant plastic material to protect the lens from damage and featuring dual O-Ring seals to have a better grip. The ring's cogwheel is whole.

TECHNICAL DATA

• Material: darlin;
• Dual o-ring seals;
• No pulling strain on the lens ring;
• Whole cogwheel ring;

WHAT'S INCLUDED

• Dial for selected lens;
• Instructions for correct use;