This dedicated conversion lens for the FE 28 mm F2 provides 16 mm focal length with fisheye perspective and a full 180 angle of view (diagonally). The converter has been specifically designed for the FE 28 mm F2, and therefore offers expressive fisheye perspective with excellent image quality from infinity down to the closest focusing distance, without compromising the basic image quality of the lens. The sophisticated design seamlessly matches the lens, and is dust and moisture resistant for maximum reliability.