Revealing mistake: When Langdon and Victoria walk towards the Pantheon, the first two angles show them walking alone with some stunt-women behind. But in the third angle, a couple of seconds later, a huge line of people appears, lining perfectly in the back, watching the camera. Obviously a group of real tourists standing behind a security line watching the shooting.
Revealing mistake: When Langdon first has an audience with the Camerlengo, you can quite easily see foundation on the Camerlengo's collar. This skin coloured compact is the base of any film makeup and often rubs off onto white collars if not checked.
Revealing mistake: When the reporters say that the second black smoke is showing, an aerial panning shot of the Vatican is shown, yet the smoke remains fix as if it were a painting.
Revealing mistake: Following the drowning cardinal scene, Richter is shown loading a pistol with a magazine and chambering a round. You can immediately hear the hammer striking the firing pin on the pistol, revealing the gun was empty. As well as Commander Richter's pitiful trigger discipline. (01:40:30)
