Lee SW150 Adapter for Sigma 12-24mm f4 Art Lens

With this adapter ring you can attach the Lee SW150 holder and filter system to the Sigma 12-24mm Art lens. The adaptor consists of a front ring, a compression ring and a locking ring. When fitted, these form a collar that remains on the lens at all times.

Price: £ 74.20 from Wex Photo Video