NiSi Filter S5 Adapter For Sigma 20mm F1.4 is an adapter designed to custom fit the Sigma 20mm F1.4 to be used with the S5 Filter Holder (Sold separately).
The adapter is constructed with aluminium alloy utilising CNC technology.
It allows the use of an integrated Circular S5 Filter (Sold separately)
If you already own the S5 System you can purchase this additional adapter to make your holder compatible with the Sigma 20mm F1.4.
The S5 system uses an adapter system so you can change the adapter to make your S5 holder compatible with other lenses.
