The Harry Potter film series has been loved by millions of children and adults around the world. Fans find these movies to be perfect, but the wizarding franchise has its share of mistakes and bloopers that only a rare viewer might notice.
In one scene, Hagrid hands a goblin an envelope. In Hagrid's pocket, it is clearly visible that the envelope is crumpled, but in the goblin's hands, it smooths out – just magic, that's all.
Metamorphoses also occur with Harry's T-shirt in one of the final parts of the franchise – when Potter has a scary dream, he is initially wearing a shirt without a collar, but when the boy wakes up, it's is completely different – with a collar. 
One of the most embarrassing bloopers is noticeable during the duel scene between Harry Potter and Draco Malfoy – if you look closely, at one moment, the cameraman appears on screen.
