Turn your Lensbaby into a fisheye lens with the Fisheye Optic, part of the Lensbaby Optic Swap System. The Fisheye Optic’s ultra-wide 12mm focal length captures an eye-popping fisheye view from infinity all the way down to one inch away. The Fisheye Optic is designed for use with the Composer Pro, Composer and Scout, but can also be used with the Muse with the purchase of a special adapter. The Fisheye Optic is not recommended for use with the Control Freak.