We are going to swim with river dolphins in the Amazon next month so I broke out my UW housing and modified the dome port so it would take over unders (it is a bayonet mount, so I had to seal it, or water would get between the lenses and ruin the shot). It worked! While I was at it, I threw the macro lens on the housing and took some tank shots both from outside the tank and inside. The quality isn't my D70, but fine for the web or for an 8x10.