Factual error: At the very end, Polly Perkins takes a spectacular picture, using the very last shot on her only roll of film. When Sky Captain tells her she left the lens cap on, she is mortified. But she would certainly know that on her Argus 35mm camera, all she had to do was remove the lens cap and retake the shot. Unlike modern idiot-proof cameras, hers has no mechanism to prevent double-exposures.
Sky Captain and the World of Tomorrow (2004)
Ending / spoiler
The evil mastermind Dr. Totenkopf died twenty years ago. The mysterious deadly sidekick is a robot that's been carrying on his project until the end. Totenkopf's plan was to carry all animals (like Noah's Ark) in a rocket that would kill everyone on Earth and give humanity a new start; the two tubes that Polly had were "Adam and Eve" and without them, the project could not continue. Joe and Polly stop the rocket from killing everyone on Earth. Polly uses her last camera shot taking a picture of Joe and he says "You forgot to take off the lens cap."
A.J.
More mistakes in Sky Captain and the World of Tomorrow
Trivia: When Joe is going to shoot the bomb on the robot's legs, you can see King Kong climbing on the Empire State building in the background. (00:14:15)
Question: When the Hindenburg III docks with the Empire State Building, the newspaper shows early October 1939. Is there any clue as to what went differently in history concerning WWII?
Answer: None.
Rlvlk