LEE Elements Variable Neutral Density Filter VND 6-9 stops 72mm pro glass This makes them more durable

This makes them more durable and easy to use

Transmission Y (%) - 36

a compressor ring and a locking ring that form a collar which remains on the lens at all times

Specifications

Full technical specifications for 217 Blue Diffusion can be found here

LEE Elements Variable Neutral Density Filter VND 6-9 stops 72mm pro glass This makes them more durableDesigned for photographers and videographers alike, who insist on quality and performance, this new LEE Elements Variable ND Filter is available in convenient 72mm screw in form, allowing users to achieve 6 9 stops of precise ND adjustment without the need to pack and carry several different ND options. Fully adjustable to increase or decrease the amount of light entering the lens over a precise six to nine stop range, without affecting the image