Quick & Secure Attachment. The LEE SW150 Mark II Lens Adapter for Canon 11-24mm f/4L consists of 3 components to attach your lens: a front ring, a compression ring, and a locking ring. To attach to your Canon 11-24mm f/4L (available separately), slide the front ring over the built-in hood with the front ring’s integrated lugs positioned away from the lens body. The compression ring can then be slid over the rear of the lens until it meets the front ring. Finally, the locking ring is also slid over the rear of the lens until it can be screwed into the front ring. After all of that’s completed, your lens is now attached and the SW150 Mark II Filter Holder (available separately) is ready to be placed over the adapter from the front of the lens.

No Vignetting. Once the lens, lens adapter, and filter holder are all fully attached, you’re able to swap out between a plethora of 150mm-wide, 2mm-thick filters without vignetting. You can find a compiled list of filters available to rent separately on the left side of this page, under “filters”. Please note that this specific package only includes the lens adapter!