Monday. Cape Town. Cage diving. Great white sharks. Can't miss the chance, and need to get this right - advice please!
I use a Sony NEX-6 (which is APSC) in a Nauticam housing, and have a choice of lenses and ports available:
(a) 7-inch port with 10-18mm zoom; or
(b) 4.33-inch port with either 12mm wide-angle or 8mm fisheye.
Obviously (a) gives me more flexibility, but maybe the size of the dome could be an issue in the confines of a cage. Also, note sure whether the sharks will be close enough to merit the fisheye.
Any advice welcome, please!