[Pre Order - allow extra time] K&F Concept Nano-D Series Variable ND Filter (43mm, 1.5- to 10-Stops) 0.5 to 3.0 Optical Density, Multicoated Japanese AGC Glass, Waterproof and Scratch Resistant, 7.4mm Slim Filter Frame, Rotates 360° from 1.5- to 10-Stop