Just to point out that the Z330 is the same body size and form factor as the Z240, but it has a domed lens that protrudes from the front, as opposed to the flat lens cover of its predecessor...This makes them around an inch wider.
I have some Seacam 60Ds on the way to!
I have had the Z330s in the pool today and shot them side by side with Z240s. I think they are definitely around 20° wider and the power difference is obvious.
All the best