Pro 4 Filter System Hood. Superb system that enables four filters to be used in quick succession. A must for wedding photographers where soft focus, vignettes, colour spots and warm ups can be switched in a fraction of a second. Accepts filters that are Cokin A series size - 67mm Square and is compatible with Cromatek adaptor rings. Many available here.
see the video of the Pro 4 Hood in operation below: Pro 4 Hood