This LCD Viewfinder is exclusively designed for use with the Sigma fp Full-Frame Digital Camera. It easily mounts over the camera’s LCD monitor using a BPL-11 Baseplate (separately available), and cuts out extraneous light that may affect your photos. With a 2.5x magnification, the viewfinder helps photographers to check the focus and decide on composition. The specially designed, high-performance lens and special coating secure great visibility.