Crew or equipment visible: When they're making their getaway from the robbery, the camera crew is reflected in the windshield of the truck they're hiding behind.
Factual errors: There were several errors involving the firearms used. When Burt robs his cohorts, the gun is obviously not real, probably rubber, because the barrel is pointed downward from the frame. If he were to shoot at someone's chest, the bullet would probably hit below the belt. When Edmond O'Brien is holding his pistol at the bad guy, he says it is a .45, but a trained eye can see that it is either a .32 or .380, most likely of Spanish origin. When Edmond asks Sam Levine if he has another .45 for him, Levine says yes, but the gun turns out to be a .38 revolver instead.