Corrected entry: At the end of the movie, when the train is leaving Hogwarts, where is the big lake that they crossed in boats in the beginning of the movie? If you look at Hogwarts there is clearly no lake around it.
Corrected entry: When the Slytherins and Gryffindors have their first flying lesson, there is a girl wearing another house's uniform. <
Correction: It isn't specified in the movie that only Slytherins and Gryffindors are in this class. This is more of a movie/book discrepancy.
Corrected entry: When Harry first finds the mirror of Erised, he walks through the door and the mirror is on his right. This is the same when he takes Ron to see it, but when Dumbledore finds him in front of the mirror, if you look where the door should be, there is just wall.
Correction: It took a close look to resolve this one. The room's laid out such that the door is between the outer wall and a shorter inner wall - Harry has to run around it to get to the mirror. As such, when we see the room it looks like the door's disappeared, whereas actually it's just behind a short wall.
Corrected entry: At the battle with the professor, the professor was perfectly fine when he tried to strangle Harry. It's only when he was touched by Harry's hands did he start to melt. But later Dumbledore said that the power was in Harry's skin (But apparently not at the neck).
Correction: The power is in his touch, ie. when Harry uses his hands - it doesn't necessarily apply to any part of his body.
Corrected entry: Dudley is supposed to fall into the water in the Reptile House, which is obviously the one at London Zoo, yet he arrives back at his home in Surrey still shivering and wet. He would surely have dried out a bit on the journey home?
Correction: It's possible to get from London Zoo to within the borders of Surrey in a very short space of time - we never find out exactly where the Dursleys live.
Corrected entry: In the scene where the first years are looking at the boats, Hagrid says: "No more than four to a boat." BUT when we see Hermione in her boat, there are FIVE people in there. Four are in the normal seats, and one is leaning out at the front of the boat!
Correction: Hagrid never said only four could be in a boat in the movie. That was in the book.
Corrected entry: During the Quidditch match, someone falls from their broomstick, landing in a pile of sand. But when we first saw the pitch it was all neat grass - where did the sand come from?
Correction: There's sand visible under the goalposts in the first shot of the field.
Corrected entry: In the sorting ceremony, we see Susan Bones, the girl with long curly hair, was sorted into Hufflepuff House. Later, in Professor Snape's Potion class, we see Susan was sitting behind Harry when Snape questions him. Only Gryffindor and Slytherin are attending in that class together - Susan was in the wrong class!
Correction: It is never said in the movie that only Gryffindor and Slytherin have potions together. There are Ravenclaws in the class too.
Corrected entry: During the final chess game when the Queen is moving into position to smash Rons knight, they cut back and forth from the Queen to Ron. During one cut, the queen figure has its fingers laced and sticking out; in the next shot, one hand is a fist being covered by the other hand. Then it cuts back to outstretched laced fingers again.
Correction: The other hand configuration belongs to the King.
Corrected entry: In the scene on the rock in the middle of nowhere, Harry is reading the letter from Hogwarts and Uncle Vernon tells Harry, 'You'll not be going there, Daniel.' (00:15:58)
Correction: In this scene Vernon is addressing Hagrid, not Harry. After Harry reads the beginning of his letter, Vernon comes across the room and says 'He will not be going I tell you'.
Corrected entry: How come Hermione is so confident that she'll get into Gryffindor? On the Hogwarts Express Train, she is already wearing a Gryffindor tie (red and yellow) before arriving at Hogwarts or being sorted into houses.
Correction: She is wearing a black tie with Hogwarts' crest.
Corrected entry: When Ron, Hermione, and Harry are looking at James Potter's seeker plaque in the trophy case, a similar crest next to his says that McGonnagall was on the same Gryffindor Quidditch team - the movie leads you to believe she was pretty old. That means, by my reasoning, that she would have been at least 20 years old when she started playing for the Gryffindors in the 1970s.
Correction: This might be a different McGonagall, or a child of Professor McGonagall, for there's no evidence that this is the McGonagall currently teaching at the time.
Corrected entry: When Ron is playing chess on top of the knight, why does he not just get off it when the other side's piece comes to destroy it? I could not understand why he clung on. It took an age for the other piece to arrive to destroy his knight, he had all the time in the world!
Correction: Jumping off would be the same as resigning.
Corrected entry: At the beginning, Dumbledore is taking out all of the street lights, from one shot, the car in right is in the second house, but in the next shot, the same car is in the first house. (00:00:55)
Correction: The first shot of Professor Dumbledore taking out the lights is from behind him, looking over his left shoulder. He obscures the first car (a yellow one parked in the drive of what appears to be no. 1 Privet Drive). The second shot of the same scene is from some 50 yards in front of Dumbledore, looking towards him, and shot looking down from the height of a lamppost. The lamp obscures the second car (a blue one, parked in the drive of no. 2). Both cars can be seen when Dumbledore and McGonnagal walk towards Harry?s house.
Corrected entry: In the scene where the troll has just gone into the girls washroom, Hermoine quickly goes back in to the 1st stall on the right hand side, but when you see the above view she is in the 3rd from the right. (01:07:23)
Correction: The overhead shot of her shows that she has her feet in the second cubicle from the left, most of her body in the third cubicle from the left, and her head just in the fourth one. She is crawling from one cubicle to the next. When she emerges, a few shots later, she has crawled up almost to the end of the cubicles.
Corrected entry: When Harry comes back to his room after having seen his parents in the mirror, he is still wearing the invisability cloak. However when Harry pulls back Ron's duvet to wake him you cannot see his hand yet he would have had to take his arm out of the cloak to do the action.
Correction: No, he would not have had to removed his hand from underneath the cloak as even through the cloak he can move objects.
Corrected entry: If Harry, Ron and Hermione can walk undetected under the invisibility cloak, why can't Harry walk with the lamp underneath it when he is going to the restricted section of the library? Surely he wouldn't have to hide the light if he did so, reducing the risk of being spotted?
Correction: Two thoughts - one is that he might worry about it catching fire, the other is that it might work on a "one way" system. Light can go into the cloak, so he can see through it, but light can't escape out, so no-one can see him, and similarly the light from the lamp can't escape. If anyone has an official description of how the cloak works, I'll gladly hear it!
Corrected entry: When Harry first views the golden snitch, and it begins to fly in the air, both characters are apparently watching it, but are looking in different directions.
Correction: When the snitch is released Harry and Oliver are looking in different directions because only Harry can see it, Oliver is trying to see where it went.
Corrected entry: When Hagrid show Harry, Hedwig (the owl) If you look at Harry's forehead you can see that his scar isn't there. If you look in the previous scene, when Mr. Olivander tells Harry about his wand, his scar is right above his eyebrow, but in the next scene his scar isn't there.
Correction: If you look close enough, you can tell the scar is still there, and that it just kind of faded out a bit. It is still there, though.
Corrected entry: The promotional photos show Harry Potter with a scar on his forehead over his right eye. On the covers of all the books, the scar is clearly shown to be over his left eye. This is to correct the mistake about the scar being in the wrong location on Harry's head.
Correction: JK Rowling has commented on this and said that in the text of the books, the scar's location is never indicated (only that it's on his forehead somewhere) and it was the novel's artist who decided that it should be centered (see the 4th book cover for the best view). The movie people decided to make it off-centre, and Rowling was fine with that.
Correction: There's no lake around the castle - it's on the south side. First years just cross the lake because it's tradition.