NiSi Sigma 12-24mm f/4 HSM ART Series Adapter for NiSi 180mm Filter Holder

The NiSi Sigma 12-24mm f/4 HSM Art Series Adapter for NiSi 180mm Filter Holder made from aviation-grade aluminum and is compatible with the NiSi 180mm Filter Holder For Canon 11-24mm to allow the use of the NiSi 180mm System on the Sigma 12-24mm f/4 HSM Art Series lens with NO vignetting in a full 360-degree rotation.

This adaptor ring MUST be used with the NiSi 180mm Filter Holder for the Canon 11-24mm to allow the NiSi 180mm filter system to be used with the Sigma 12-24mm f/4 HSM Art Series lens.

Compatible Holders

NiSi 180mm Filter Holder for Canon EF 11-24mm F/4L USM

Key Features:

Vignetting free using the 180mm system canon 11-24 filter holder even at 12mm

Use the 180mm system canon 11-24 filter holder also on sigma 12-24mm f4 lens

CNC machined from a single block of aviation-grade aluminum.

With the matte black frosted finish on the surface.gasket to prevent any light leaking.

The 180mm system holder for the canon 11-24mm 4.0L is sold separately and not included