Nauticam Extension Ring 70 with Focus Knob For Canon EF 11-24mm F/4L USM
Anodized aluminum construction. Increases the length of lens ports by 70mm, allows for manual focusing with appropriate lens gears. This version of the focus extension includes two different pinion gears; a smaller one for the 11-24 and similarly sized lenses and one for smaller diameter lenses such as the Canon 16-35 USM series. They are field swappable.
Includes larger pinion gear, cover, extra oring and silicone grease.
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