Custom dome for Tokina 10-17 and Nauticam. Based on the 61mm radius Bare dome, this acrylic dome has a plastic lens shade and Nauticam mount. $200 US. Professionally made ports using the same acrylic dome can be seen at http://www.creativei...com/virtual.htm
The centre of curvature of the dome is positioned coincident with the apparent front entrance pupil of the 10-17.