During the final fight, Silvio (shot in the leg) changes from limping to non limping several times. Additionally, the weapon he has changes from rifle to handgun several times.
Towards the end of the film, at the Medical Centre "Camera D" is shown as the camera at the gate outside. Later on, "Camera D" is shown as the camera outside of the lift inside.
When Robert Grant accuses Ava of murdering her husband, his drink changes in amount and colour several times from a little which is dark brown to a lot which is lighter.