LEE SW150 MKII Adapter for Canon 11-24mm Lens

SW150 Adaptor: Canon 11-24mm
The Adaptor consists of a front ring, a compressor ring and a locking ring specifically designed for the Canon EF 11-24mm f4L USM lens.
Due to the physical size of this lens, and the extremely wide angle of view, the SW150 filter holder will vignette at the widest angles. To avoid this we recommend using a minimum focal length of 13.5mm when using the filter holder with two filter slots and 12.5mm when using the holder with one filter slot.
LEE SW150 System