Ideally designed for Nikon 1 AW1 waterproof camera systems, the Nikon AW 40.5 mm NC filter can be easily attached to the underwater lenses of these camera systems. The filter has a diameter of 40.5 mm and compensates for the loss of contrast and colors while working in underwater conditions. This filter can be used up to the depths of 65.6 feet. It dramatically reduces the condensation on the lens surface when attached with a waterproof lens, giving you sharp and clear images even when working underwater. This filter is compatible with NIKKOR AW 11 to 27.5 MM f/3.5-5.6 and 1 NIKKOR AW 10 mm f/2.8 lenses.