Irix Edge 100mm Full ND Square Filter

These are the 100 x 100 mm square neutral density filters for the Irix Edge IFH-100 and IFH-100-PRO holders. Working in a holder rather than on a thread means one filter set covers every lens in the bag, and it stacks with the graduated filters without vignetting on wide glass.

Two lines are offered. The SR filters use toughened Super Resistant optical glass. The IR-cut filters add infrared blocking, which is what keeps a heavy density from casting the magenta-brown colour shift that long exposures otherwise pick up. Both carry multi-layer anti-reflective coatings and a double-sided NANO hydrophobic and oleophobic layer.