I have read an article that is not about techniques or filters. I am almost sure you all can recognize the photo of a vulture behind a near death girl in Africa. It gained a lot of prizes (Pulitzer for example) and it showed a real situation in that continent.
But reality can have several faces. In this article we can see a bit about... ethical photography? It is lawful to show only what you want, or should your photos reflect the real situation?
In this case, the photographer decided to show a terrific, but not very truthful, photo. Instead of gimp/photoshop he used a "legal" camera technique.
It is up to you to decide.
Link - Enlace
PS: The articule is in Spanish