Two Techdiver
Fig. 21: Two techdiver exercising. Each one has a double tank on it's back. tree stage tanks and a small argon tank for their dry suit. Impressive, but too much for me and my back. — Nikon D200, Nikkor 10.5mm DX Fisheye, Riedsort, Lake Lucerne, 16 August 2009 Nikon D200; Δt=1/31 s; f=10.5 mm; f/2.8; ISO 400; 16 August 2009 10:27:55