77mm NDX Variable Neutral Density Fader Filter (Adjustable ND2 - ND1000) for Pentax K20D

Versatile variable neutral density filter for use with 77mm lenses on the Pentax K20D. Adjustable from ND2 - ND1000 to let you precisely control exposure without swapping filters. Built with multicoated glass for consistent image quality. The rotating exterior ring provides quick, on-the-fly access to any density setting—simply turn the ring to dial in the exact light reduction you need. Saves time by eliminating the need to add or change individual filters, making it ideal for shooting across changing lighting conditions.