NDX Variable Neutral Density Fader Filter 72mm (ND2 - ND1000) for Sigma 150mm f/2.8 EX APO Macro EX DG HSM

72mm NDX variable neutral density fader for the Sigma 150mm f/2.8 EX APO Macro EX DG HSM. Continuous adjustment from ND2 - ND1000 lets you control exposure without removing or swapping filters. Built with multicoated glass to help minimize reflections and maintain image contrast while you alter light transmission. The outer control ring provides smooth, on-the-fly selection of any density setting so you can fine-tune exposure scene to scene. Ideal for fast-changing lighting conditions, this variable ND saves time and streamlines your workflow by replacing multiple fixed-density filters with one easy-to-use unit.