The Deer Hunter (1978) - 10 mistakes

Continuity: The boys go deer hunting somewhere in the Appalachians, but the geology is all wrong. That scene is in North Cascades National Park in Washington State.

Continuity: During the long wedding scene, while Michael watches Linda on the dance floor, the level of the beer in his glass goes up and down several times.

Revealing: During the scene when Michael pursues a deer and then refrains from shooting it, the bolt action on his rifle switches from a left handed model to a right handed model. When it switches the shots are flipped, also note other items that are reversed.

Continuity: In the scene where the boys are changing into all their hunting gear on the side of the road, keep an eye on Christopher Walken. In a wide shot, he's pulling on a dark green sweater. There's a quick shot of De Niro, then back to the wide shot, in which Walken is again pulling on the dark green sweater.

Continuity: The deer that appears in the film is a mule deer. Mule deer are not indigenous to Pennsylvania. Pennsylvania deer are white tailed deer.

Continuity: When Michael and the guys get back to the bar they pour drinks in their glasses. The amount in the glasses suddenly increases.

Factual error: Back from Viet Nam, De Niro is wearing a green beret and he has a 101st Airborne Division patch on the left shoulder of his dress greens. It should be a Special Forces patch. This is done deliberately, as the film makers are refrained by law unless permission is granted, from showing accurate military uniforms.

Continuity: When Michael and Linda are walking outside the Eagle Supermarket, there is a man pushing a shopping cart. At first the man is far away from the corner of the building, when it cuts and the man says "How is it going hot-lips?" he is right by the corner.

Continuity: The helicopter rescue scene from the suspended bridge contains the continuity error that the helicopter seen from the bridge has two people hanging off the runners even though they have not been picked up yet.

Visible crew/equipment: In the beginning of the film, when Linda is getting ready for her wedding, standing in front of the mirror at home, a boom mic is visible at the top of the mirror.