Sunlight in the places where the water is shallow, reaches the boulders and gravel from the lake bottom. The underwater reflections from place to place reach a maximum intensity, thus being created a lots geometrical shapes of light, due to irregular water surfaces, which are acting like a lot of lenses in a continuous motion. Also, at the water’s surface many blue spots can be seen. Are the reflections of the blue sky.
The image was created with a Nikon D40X camera and Nikon 55-200mm VR AF-S f/4-5.6G ED lens, using these settings: exposure time – 1/125 seconds, focal length – 90 mm, ISO – 800, F- number – 7.1