Here is a great example of the difficulties of shooting in dense nature. When surrounded by trees, water, and nothing that really stands out, it is important to find something that will guide the viewer into the image and point out a subject. In this case, it is the branch of tree in the water that become the foreground element with the addition of the prominent tree on the left side. Without these elements, the image would look empty and you would only have a pond with trees in the background. In most cases of landscape photography, you always need to find a subject in the foreground.
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