16-35 is razor topside.
It's a bad combo of +2 dioptre and too small (8") dome.
I think it needs a +3 dioptre or a larger dome. (strictly based off opinion not testing or scientific fact)
Though I have heard many complaints about the 16-35 uw.
I just got my larger dome today but haven't had it in the water yet.
I "think" I know what you mean, Ill try and research it some more so that I dont end up with worthless options! I hope it works with your larger dome!
And thank you for explaining since Im so knew to all this and the terms.