Optional Ikelite Dome Port #9306.70 or Flat Port #9306.71 allows use of Canon's WD-H37C Wide 0.7X Converter Lens. The Dome Port provides a wider angle of coverage, but has limited zoom and macro range. The Flat Port offers full zoom and full macro capabilities. They also fit the Raynox DCR-730 digital wide-angle lens in conjunction with Tiffen 46-52 mm step-up adapter ring.
Dome is made from optical grade injection molded acrylic. Dome is specifically designed for underwater photography to provide superior optical performance. Its larger radius reduces edge distortion on pictures taken with certain super wide-angle lenses and makes shooting over-under shots easier. The Dome base is made from durable delrin.