Crew or equipment visible: In one of the final shots, as the camera circles Aguirre's raft, you can see the wake left by the camera boat.
Crew or equipment visible: In one shot where the camera moves around the rafts, you can see the crew's living arrangements (a bunch of rafts with huts on them) near the bank of the river.
Anachronisms: Peruvian Indians are dressed in clothes that were imported by Spanish people in 19th Century. The Aguirre story is setted in 16th Century.
Anachronisms: Peruvian Indians play a song called Valicha composed in the 20th Century.
Anachronisms: One of the main characters in the first part of the film, Gonzalo Pizarro, actually died in 1548 - twelve years before the film is set (1560).
Continuity: The raft caught in the whirlpool was circling all the time during the first day, but in the second day it stands still.