A viewfinder designed exclusively for use with the SIGMA fp. It can be mounted over the LCD monitor and cuts out extraneous light. With a 2.5x* magnification, it helps photographers to check the focus and decide on composition. The specially designed, high-performance lens and special coating secure great visibility. * The value of magnification was determined based on a definition commonly used for calculating the power of a magnifying glass. * SIGMA BASE PLATE BPL-11 Supplied.