Images of Somalian pirates, the Haiti earthquake and the first people to walk on the moon are some of the famous shots to have changed the world emotionally, financially and dramatically, a photography expert said.
Getty Images vice president of photography Stuart Hannagan spoke to the Herald ahead of World Photography Day on August 19.
He wanted to celebrate images for their societal good and power to evoke emotion.
One of his favourites was of Princess Diana looking into the eyes of an HIV-positive child. Hannagan said that changed the tone of what royals could do.