<ul><li>Firecrest technology is neutral across the whole spectrum, including UV, visible and infra red</li><li>5\"x5\" IRND neutral density filter reduces light by 4 F-stops</li><li>Hyper-neutral Firecrest coating is sandwiched within filter, providing protection against scratching and damage</li><li>4mm thick filter made in the UK using Schott Superwite glass, the finest optical glass available</li><li>Compatible with all 5x5\" matte boxes</li></ul><br><br>Firecrest ND 5x5 ND Neutral density Filter 1.2 (4 Stops) compatible with all 5\"x5\" matte boxes.