Fig. 20: It's not very easy to hold the breath long enough so that the bubbles don't disturb the water surface. Here one can see the roman bridge through the water surface. — Nikon D200, Nikkor DX 10.5mm Fisheye, Verzasca, Lavertezzo, 20. August 2009 — EXIF: Nikon D200; Δt=1/160 s; f=10.5 mm; f/6.3; ISO 200; 2009-08-20 10:39:28
