I will spend at leats a couple of days diving with the 150mm in Wakatobi. I will post subsea shots when I return. Thanks for the strobe placement shot. Generally I use dual side view (z240) at the same level as the lens.
I use the 17/70 in a flat port and it will take decent semi-macro and semi-wide. It is extremely flexible but is really neither a macro or wide lens. I use a 105 almost exclusively for macro but many use the 60. I would take a true macro lens in a flat port for this trip.
I have a +5 and +10 subsee that I will use with this lens. The shots are very clear. The underwater shots have limited POP from the strobes. The lighting is even and brings out the detail on the surfaces. It is an interesting look.
I shoot in autofocus only because that's the only option I have. Hunting is not the issue for me, it's precise focus. My solution is to shoot in focus priority, get closer than minimum working distance and slowly back up. Hwever it's very fustrating waiting for the computer to decide the shot is in focus when it looks great to me.