Metuje river flowing through Peklo canyon

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Startrails over the Kotel
Object: Metuje river flowing through Peklo canyon
Location, date: 29.10. 2011
Focal lenght, speed: 25 mm, f/25
Camera: Canon EOS 350D on tripod
Senzor: APS-C 22.2 x 14.8 mm, pixel 6.4 um
Lens: Sigma 17-70 mm f/2.8-4.5 DC Macro
Expozure: 4 sec, ISO 100
Filter: gradient neutral filter