The man massacred in the village early in the movie hardly bleeds, despite many machete blows. When stabbed in the neck, there is no immediate bleeding or spray.
When Greg Marinovich and Joao Silva are reviewing Kevin Carter's film of the vulture and child, the negatives they view through the magnifier are actually halftone images, not normal negatives that one would be examining before publication. (Halftones are the "dotted" images used to print photographs in newspapers and magazines, etc.)
When the boy throws the block onto the man villagers have nearly killed, it bounces off him and is clearly not hard.
In the film Kevin Carter plays the song "Just" by Radiohead on his radio show. However the song was released in 1995 after Kevin's death.
When Greg and Robin drive out of the township after they took pictures of the man's dead son, you can see a Volkswagen T5 van in the rear mirror. However, this model was introduced in 2003.