Continuity mistake: Just after Harry and Lord Voldemort have their altercation in the Forbidden Forest, Neville is seen walking into Hogwarts' courtyard entrance to pick up the sorting hat. In the first shot, there is a camera angle of him from the waist down from behind, and he is stepping over the rubble and having no trouble walking. In the very next shot, you get a full frontal view of him walking, and he is limping and can barely move. (01:38:00)yesimatt
Continuity mistake: Throughout all the movies, the characters discuss several times how much Harry's eyes resemble his mother's. When we see flashbacks of Lily in this movie she has dark brown eyes. In past movies, when she was portrayed as a Hogwarts student, (in most of the same memories) she had blue eyes.
Continuity mistake: When the Snatchers run out of the forest toward the covered bridge, Neville is standing in the bridge's center. But when the three Snatchers are killed by the shield, Neville is now standing at the bridge's entrance. (00:50:50)
Continuity mistake: When Snape redirects Professor McGonagall's spell to Alecto Carrow, she falls on the lower platform. But after the camera angle changes, she is lying on the second platform with her brother Amycus.
Continuity mistake: During the final battle between Harry and Voldemort, Harry disarms Voldemort and his wand spins out of his hand counter-clockwise, then it cuts to the wand spinning towards Harry clockwise.
Continuity mistake: When Nagini (the snake) is moving down the stairs to attack Ron and Hermione, it lunges from midway down the stairs, under the archway. After intercutting a shot of the duel between Voldemort and Harry, Nagini is lunging from the ground, far away from the staircase and the archway.
Continuity mistake: During the duel between Harry and Voldemort whilst they are on the Hogwarts staircase, there's a midshot of Voldemort casting a spell. His arm is at an extreme bend with his elbow close to the top of his head, and his forearm is above his head. The very next shot from a different angle, Voldemort's arm is straighter and his elbow is not bent, with his arm a considerable length away from his head.poppingcorn
Continuity mistake: After arriving in Hogsmeade, when Harry is talking to Aberforth Dumbledore, the table by the window has two chairs on one side of the table. A few minutes later, there's only one chair on that side, and the other chair is now at the end where there was previously none at all. (00:28:00)raywest
Continuity mistake: When Filch is holding Mrs. Norris the cat's eyes are not red, but in all the other films they are.
Continuity mistake: When Ron is about to cast a spell to destroy Nagini the view of him pointing his wand starts out from behind him and Hermione, before the shot changes we see Hermione turn her head towards Ron. When the shot changes to face them Hermione is looking at the snake then turns her head again.