Sigma Drop In WR Variable ND RND-21TL Filter with 7 Stops of Light Reduction (L-Mount)

The Sigma Drop In WR Variable ND RND-21TL Filter allows effect adjustment via dial while attached to the lens. The filter is compatible with L-Mount lenses. It enables up to 7 stops of light reduction to achieve slower shutter speeds without excessive stopping down, making it ideal for panning shots in motorsports photography.