Photographer's Note

Two swans on Lahn river near Balduinstein, shot on slide film with Canon A1 against the light and converted to B&W.
It is an interesting phenomenon that both limits of the bow wave include an angle of 39 degrees, which is independent from the source (swan or ship) and its speed, provided that the speed is not too high.
Professionally digitalized.

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Additional Photos by Sven Erich Czernik (Energysavingelk) Gold Star Critiquer/Gold Note Writer [C: 474 W: 1 N: 1552] (6299)
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