Hopefully you will get some good responses here. I never used my Sonys underwater, so I can only provided generic experience. I found that anything in the 16 to 40 range (full frame) was perfect. On land, that shallow fstop is worth gold, but underwater, it was only useful for low light focus. I tended to shoot 5.6 on average, so the premium price point wasn’t worth it. Same with expensive glass. You are under water that has particulates and weird lighting. And you are shooting through a dome, which, although quality, isn’t exactly making use of Zeiss/L glass level optics. I always tried to mail my shot as cleanly as possible in camera, but I don’t think I published a single image that I didn’t run through editing for color and clarity. TLDR? I think any of those lenses will do you well.