When you need to get the widest possible angle of view, add Century's Super Fisheye Adapter. The Super Fisheye produces an extraordinary degree of barrel distortion with a magnification factor of approximately .55x. For example, adding the Super Fisheye to a modern 15x8, results in a 116o horizontal angle of view - a remarkable 145o when measured diagonally.
Requires 0FA-8282-00 and 0FA-5X85-00.