Nauticam’s WACP-2 is designed to work with 14mm lenses to produce a (maximum) 140° field of view while maintaining full zoom-through optical capability.
It is designed for full-frame cameras. Since it can focus on air, it is suitable for split-shots as well. When used with wide-angle zoom lenses, i.e. from Canon or Nikon, the wide-angle conversion port provides a field-of-view range from 140-72∞, depending on the lens model used.
Its lens construction consists of four elements in four groups. Its weight at the surface is 7.06kg, while underwater it is 0.85kg (when using the included float collar). The WACP2 is depth-rated to 100m.