Fig. 1: Flex diving into the green water. The lake should be clear then but there was a group of OWD beginners before digging in the dirt. — Nikon D200, Nikkor AF-S DX 12-24mm, Immensee Baumgärtli, Lake Zug, 21 June 2009 Nikon D200; Δt=1/60 s; f=20 mm; f/5.6; ISO 100; 21 June 2009 10:24:02
