I currently use a Sony A7RII + Sigma 15mm in a Nauticam housing, and I'm now looking for a WA alternative.
I was about to order the Sony 16-35mm FE f / 4 tthat is an excellent lens with existing configuration for Nauticam, but it may also be an idea to take a look at the new Zeiss Batis 18 f/2.8 that will be released in May, or what do you think?
I'll probably wait for some reviews before making a choice.
It is time to go full-frame for me and after a lot of evaluations with Pros and Cons of stepping back to DSLR vs stay Mirrorless I finally ordered a Sony A7RII + Nauticam housing. I think the native Sony 28mm lens with Fisheye adapter will be a bit too bulky, so I decided to choose the well proven Sigma 15mm instead (Canon EF) + a Metabones Smart Adapter.
I have read that the version IV of the adapter should work with Autofocus on the Sigma Fisheye. Is there anyone here who can confirm this and have tried this setup, or with another adapter brand?