Thanks Pooley,
That certainly explains things better. I have seen lots of people talking about the Sony 28-60mm and using the WACP, it is a little confusing which one, ha
I currently have a Sea Frogs housing and it's easy just to whack a lens on behind a dome. The results from the 24-70 sigma are fairly disappointing but have wet my appetite.
So would the 28-60mm with a WACP be the same IMAGE quality, as say a 16-35 mk2 behind a dome or would it be better?
As I say in my reply to chip, I'm an open canvas really and haven't invested too much in lenses (That I don't already use above water), so I have lots of decisions.
I got it wrong with the Seafrogs and bought Everything, obviously with nauticam I would have to sell a couple of kidneys, ha ha
Thanks again for your reply
John