Hello...
just a few clips I put together from the last weekend during our sidemount training befor the expedition starts in March.
This is the first time I used my 5D3 under water, in my 7D housing (it works, but not grate). but the nice thing was to se the Sigma 20/1.8 on a FF during diving.
I shot this in ISO 1250 at F2.0
I hope you enjoy...