I thought it might be worth discussing how important technical aspects are to individuals when viewing images.
While subjects and composition are naturally very important, do people find that if images have technical flaws, this affects their enjoyment of them?
My take is that, while I enjoy charismatic images of interesting subjects, once I notice technical flaws, this lessens my enjoyment of them. Shooting underwater is fundamentally difficult, and typically things like corner sharpness (for example) can be mitigated by researching and choosing lenses that have good corner performance behind a dome port. In effect, this is something that can be "fixed" before we get in the water and then attempt to find, compose, expose and focus our elusive subjects.
The hard part of underwater photography should be the bit underwater, and I want my gear to support me, particularly when I want to capture an "excellent" or "once in a lifetime" image. I am the weak link in the imaging process and the last thing I want is that my equipment is not performing as well as it could/should.
Hence things like lenses that perform poorly behind a dome port are not acceptable (to me), and I seek out the best possible options (within my budget of course). Similarly, I would never recommend an imaging solution that compromises the potential performance. of an optical system to others.
Or, have I got it all wrong, and if I find a charismatic and fascinating subject, technical issues do not matter?