77mm NDX Variable Neutral Density Fader Filter — Adjustable ND2 to ND1000 for Pentax K-x

A 77mm NDX variable neutral density fader that lets you control exposure without swapping glass. Rotate the external control ring to select any value between ND2 and ND1000 for precise attenuation scene to scene. Built with multicoated glass construction to maintain image quality across a wide range of lighting conditions. Eliminates the need to change or stack multiple filters, saving time while allowing fine-tuned density adjustments.