I've just bought the Sony 10-18mm lens for my Sony NEX7 & Nauticam housing and appreciate your advice on ports if you use this particular lens.
Looks like there are 3 options. I was assuming the Nauticam acrylic 7 inch (being acrylic) will not perform as well as the Zen and Nauticam glass port options. However as the acrylic 7 inch is made specifically for this lens this may not be the case? There's a price difference of course, and base/extensions needed for the glass which come into it, but purely on photo quality are you losing anything in this case with the acrylic 7 inch?
Good Viz Pete