NiSi Adapter Ring for Sigma 12-24/4
An adapter ring for the Sigma 12-24/4 HSM ART Serie that enables the use of 180 mm square filters. It is manufactured from high-quality aluminium with precise CNC machining and features a black frosted surface. The anti-reflex design is used to prevent interference in the image.
This adapter ring is intended for use together with 180 mm square filters and a filter holder for the Canon 11-24mm in the 180 mm system. The holder is sold separately and is not included.
Specifications
| Filter form | Round |
|---|---|
| Format | Square |
| Manufacturer | NiSi |
| Warranty period |






































































