I was wondering if anyone could get deep and detailed on explaining how to achieve hyperlocal distance while shooting with both dome and flat ports in and at the waters surface? With a dome port it is clear that the shape of the dome has a drastic effect on focus distance, I grasp a touch of the physics involved in this but cant really put it into practical use.
I am looking to close down my aperture and shoot largely in manual focus but notice through trial and error I am having varied success and it is not working the same as a camera out of a housing.
I think some irrelevant details might be: 5d mk IV or 1dx mk II in aquatech housings with a mix of dome and flat ports, lenses range from 16-35 2.8 mkiii, 24-70 2.8 mk II or 135 f2 predominantly.
I am close to calling up aquatech and begging them for a lesson. Hope this helps having a discussion here.