I currently have a Nauticam a6300 with a N120 dome for a ZEISS Touit 2.8/12 and a Macro port for a 16-50 kit lens. When I bought this 4 years ago, the a6300 became my above-water camera and I sold off the Canon gear I previously used. I recently bought a A7RV for above-water, and it is a HUGE improvement over the a6300.
I have a few issues with my current setup, cracks in part of my tray, a broken vacuum pump (that still works), a broken flash on my a6300, etc. Some of these I can live with, and some I'd repair before my next trip. I was also considering upgrading either or both lenses. This got me wondering how much more I'd need to spend to take the A7RV underwater instead. A Nauticam setup at $5k is not realistic, however I could probably buy a whole SeaFrogs setup for what I planned to invest in repairs and upgrades before my next trip.
So my question is, would going from the most expensive and best made housing for an old ASPC camera to the cheapest housing for a new and great full frame camera be an upgrade? What do I lose going with the cheaper housing? I am not sold on SeaFrogs either, I've just heard a lot of great things from people who've used them. There are a lot of options priced between SeaFrogs and Nauticam, but I haven't met anyone who used them.
