If you are standing two feet away from your subject yelling "act natural," you will fail. Use a telephoto lens (70-200mm) or zoom in tight. This allows you to stand far away where your subject forgets you are there. You become an observer, not a director.
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If you search for "Candid Beach com best," you will find exactly what the keywords promise: a raw, unfiltered look at beach culture through a candid lens. If you are standing two feet away from