Thanks Davide,
I think the IQ here is pretty representative of what I see in photoshop. Obviously a little hit due to lowering the quality to around '70' to get a reasonable image size. (I know nothing about how effect much posting large photos has on a forums hosting allowance)
I think there is plenty detail available for people to be able to offer genuine critique on composition lighting as well as the technical side
Looking at the 2nd picture - which is in my mind the sharpest - I don't think there is much of a negative affect. Happy to send you the originals via email if you want to do a test at home.
Gear wise Sony A1, 90mm lens, 160 degree objective
Hardest part for me was getting a sharp image with a blue background as you shoot at really los shutter speeds and clownfish rarely stop moveing
Mike