Revealing mistake: During Quidditch tryouts, when Ron blocks the Quaffle with his head in the closeup, Ron's body disappears at the bottom of the screen below the digital editing line. (Only visible on fullscreen DVD).
Revealing mistake: Just as Jacob enters Bella's room through the window, a stunt prop - white band on his right wrist - is briefly visible.
Suggested correction: There is nothing on his hand if you watch frame by frame.
Revealing mistake: Near the end of the film, Meryl Streep and Alec Baldwin are sitting on a lawn swing. The number of chains supporting the swing varies between shots. Sometimes the back stay is a single chain and sometimes it is a double chain.
Suggested correction: The swing supports never change. There's suspending chains on both sides of the bench; both chains are each attached to another chain with (2) connection points, one on the lower front and one on the upper back (4 points total on the bench).
Revealing mistake: When Margaret falls from the boat, she is floating with her shoulders well above the water, probably due to a hidden flotation device. Her outfit was too tight to trap any air for buoyancy, and a fully clothed person would normally be up to their neck in the water.
Revealing mistake: As the boat is in its final minutes, two of the crew are shown swimming across the deck to get to the dry part. But once they've climbed up, their clothes are still dry.
Revealing mistake: Raju's website is actually a screenshot. The recycle bin is visible in the upper left corner. It can also be seen that there is no internet connection in the lower right corner of the computer. (02:40:15)
Revealing mistake: When Connor jumps out of his uncle's car before it crashes into the lake, it's obviously a stuntman. His hair is darker and straighter than the actor's. (01:22:40)
Revealing mistake: When Georgia and Poupi are walking back towards the bus from the store where she buys food for everyone, several bystanders at both sides of the road just stand there looking at the camera. (00:17:30)