Nodal Ninja Plastic Insert for Lens Ring Sigma 4.5mm Canon Mount
This plastic insert is a part of the complete Lens Ring. You will only need it if you are building your own or upgrading. You will also need to buy a matching metal lens ring and lens ring plate. Make sure you always specify the correct lens type when purchasing this plastic insert. For more information see our manuals and lens ring build charts.
Illustrative photo only.