An external wide angle conversion lens increases angle of coverage so you can get much closer to your subject while still fitting everything in the frame. By reducing the amount of water between the subject and your camera lens, the resulting image will be more crisp and colorful.

Attach
67mm threaded #6420 Ikelite W-20, Inon Type II, and Epoque lenses using the #9306.78 Port Adapter. This adapter can also be used to attach 67mm threaded macro lenses. The W-20 Lens accepts filters #6441.42 for blue water or #6441.82 for green water settings.
Attach
bayonet style Inon macro and UWL-100 28AD, UWL-105AD or UFL-165AD wide angle lenses using the #9306.85 port adapter.