Different metods of using a photo

http://www.gutenberg.org/files/34501/34501-h/images/080.jpg

This is a documentary photo. This photo is a showing something that has happened. It should not be edited, before and surly still in some countries you can use it as evidence in a court.

http://rt.com/files/news/1e/5a/a0/00/earthquake-oregon-report-tsunami.jpg

http://forests.org/shared/alerts/img/wolf_machine_gunned.jpg

This is a news report photo , it's telling us a story. Most commonly used for journalist and news reporters

https://s-media-cache-ak0.pinimg.com/736x/6c/1c/39/6c1c39a7ccd8b74a7f95bc3b6cc3710a.jpg

Fine art photography, used by artist to express themselves, these photos are thought through have a purpose regarding feelings and atmosphere and can be manipulated and edited to create whatever image one wants.