Nisi’s 180mm range is designed for ultra-wide lenses without a standard filter thread. A Popular example is Canon’s 11-24mm. Our 180mm holders allow two square filters to be used on these ultra-wide lenses.

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

$89.00
  • 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 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