Thoughts on a g7x set up...

Actually the g7x with the nauticam vacuum system is the only way forward as with that system changing battery each dive is not a challenge. But on a rib for s double tank dive where j can't open the housing I would like to be sure I have enough fuel for two dives and a camera with cipa rating 210 will barely take me there if I take many shots

Clownfish,

After reading this thread I'm wondering what you decided to go with. I have the exact same setup in mind. I've always admired the results of the RX100 but after 10 years I don't want to move away from Canon and I want the flexibility of both super macro and wide on every dive.

Thanks for any advice