I owned the Sony A7C + 28-60+WWL1B and my unscientific perception was that the sharpness of subjects 10’ and further was not as crisp as I was previously getting with my Oly MFT 12-40 in a dome. I often shoot dolphins and sharks that are not always close. I ended up switching to Canon, but when I did, I opted for the 14-35mm in a 230mm dome instead of water contact optics. I prefer this setup over the 28-60+WWL-1B. Also interesting, is that I find myself using the 35mm end of my 14-35mm far more often than the wide end, and am considering adding a 24-70mm lens +180mm dome as my standard setup. I would sacrifice corner sharpness for the smaller/lighter dome, as most of my dives are shore diving. I think this zoom range is overlooked by many as we tend to be taught that fisheye/wide-angle + macro are the two setups you should ‘focus’ on. I also own the 8-15 fisheye, and love this lens, but it is only brought out for special occasions like CFWA on colorful reef scenes, or if I’m traveling and need to lighten my kit weight.
-Jaycee