Ikelite Underwater 26mm, .7x Wide Angle Lens for Coolpix Camera Housings.

The large diameter Nikon WC-E63 optional wide angle lens blocks the TTL strobe control sensor on the camera. This would make use of a strobe very difficult.

A special smaller diameter optional wide angle lens is available from Ikelite for this application, converting the 38mm Coolpix lens to 26mm.