This image uses the emphasis as a principle of design, more specifically due to the use of contrast and depth. The contrast of this photo allows the coffee cup to pop while also drawing emphasis to the forest setting arising out of the cup. The lighting of this image allows for a play off of the steam/mist arising out of the cup which makes it even more appealing. The depth of this image also contributes to emphasis as the focus is sharpe and the small details are made clear.
"Penguins Following Zookeeper" [A zookeeper at the London Zoo, London, England, United Kingdom leads hungry penguins with a pail of food.]~[Photograph credit: Hulton-Deutsch Collection/CORBIS - Photograph dated October 18 1939.
Art and photography such as this can have a big impact on society. Photographs like these allow people to realize the kind of destruction of our environment is happening. This picture is also an example of a clear cut deforestation technique where all trees are cut to the trunks in a large section of land. This can be the most harmful kind of deforestation because it completely disrupts the ecosystem killing all plants and making animals flee.