The Fisheye Adapter allows you to turn your Lensbaby Muse or Control Freak into a fun 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 0.5" (1.3cm) away from the front of the lens. The Fisheye Adapter is required to use the Fisheye Optic with the Muse or Control Freak. (No adapter is required to use the Fisheye Optic with the Composer). The Fisheye Adapter ships with a hex key to easily remove the standard adapter that comes installed on the Fisheye Optic and replace it with the Fisheye Adapter.
Note: It works best for macro photography (0-3", 0-7.6cm) when used with the Control Freak. The Control Freak's metal rods may be visible when focusing on any object farther than 3" from the front of the optic.