Name: Haitong Yu
Country of residence: China
Country where picture is taken: China
Title of the Picture: Trails of fallen leaves
Camera Canon EOS 500D
Filter: Neutral Density(ND)
Shutter Speed: 30s
Comment: Fallen leaves afloat in a pond in the campus of Tsinghua University, Beijing, China. With an ND1000 filter I made a 30-second exposure, which visualized the swirling water under the cascade as revealed by the traces of fallen leaves.