Nauticam N815-Z+1.4 Zoom Gear for Nikon AF-S Fisheye 8-15mm with Kenko 1.4x teleplus pro 300
Zoom gears allow for access to the mechanical zoom function of a lens inside supported housings. This gear set is designed for use with the Nikon 8-15mm Fisheye when paired with the Kenko 1.4x Teleplus Pro 300 teleconverter. Please check the appropriate Port Chart for compatibility.
Quick installation guide
Place plastic collar over the lens zoom band near the glass.
Next, slide the aluminum zoom gear over the plastic insert.
Once Installed, it should look like the image below.