Revealing mistake: When Gittes visits the orange grove and crashes into the tree, you can see that a steel plate has been placed around the tree to protect it.
Continuity mistake: When Amelia jumps in the water to save the the little girl there is tape on her mouth. A moment later, the tape is not visible.
Revealing mistake: When Shooter pins Mort against the tree with the shovel, you can see that it's a rubber shovel because it's bending around Mort's neck. [Mentioned on commentary]. (00:40:45)
Continuity mistake: When Sister Aloysius is walking Mrs. Miller to work, the Sister's umbrella handle is hooked to the left, then hooked to the right in the next shot. (01:12:10)
Continuity mistake: When Milo is walking with the ladder and trips, his hat falls off. The hat is couple of yards away from the spot where it first landed in the next shot. (00:37:10)
Visible crew/equipment: When Peck is falling down the stairs with the kid, you can see the back pad through his coat.
Continuity mistake: When Alice and Adam get in the cab outside the bookshop, the number on the back of the taxi is 90167, there are no other markings on the back and the Y on the number plate has a long stalk. When they're pulling away from some traffic lights later, the number has changed to '14290', there are the words "fairaway 95" on the back and the 'Y' has a small stalk. Note that, since the number plate (K651EYW) stays the same, for at least one of the shots they were driving a car around London with the wrong plates on. (00:08:30 - 00:09:25)
Continuity mistake: At the end, when Dr Calvin, Del, and Sonny are in Robertson's office, when Sonny starts to trick Viki, Calvin has her body side on, then she is completely facing Sonny, then back to side on, then finally back to facing Sonny again. (01:27:55)
Continuity mistake: When Fletch goes to visit Calculus in his shack, he knocks on the window and sees Calculus sitting in a chair, wearing boots. The next shot, as Fletch is walking inside, Calculus is now wearing socks and no boots, despite never having left the seated position, nor having had any time to slide his feet out of the boots. (00:35:55)
Continuity mistake: When Claire first sees the ghost, Norman rushes in and Claire grabs and hugs him. Her hand was just in the tub yet as she's hugging Norman, her hand is dry. She would have left some kind of a wet mark on Norman's shirt.
Character mistake: While examining "Diagramma della Verita" in the Vatican archives, Langdon is careful to use a cotton glove and a pair of tongs to turn the pages. But when he returns later to search the Bernini texts for clues about the "fire" church, he turns the book pages with his bare hands. (00:36:30 - 01:04:55)
Continuity mistake: In the scene where Clouseau is having his hair shampooed, the amount of shampoo on Ponton's hands changes, and then the suds disappear. (01:07:40)
Other mistake: When Prot visits the doctor's house, he thanks the wife and the camera is zoomed into his sunglasses. The reflection of his glasses shows the doctor looking at him, but the doctor is standing behind him. (00:53:40)
Continuity mistake: In the scene after the bus rolls down (when they are at the beach), one of the girls is wearing a red bikini, but when she gets in the water it's black. (00:13:40)
Continuity mistake: When Robert Redford tips the scrabble letters onto the glass table, he makes "SETE" and "CAST" next to it. To the right of "CAST", under his right hand, are the letters RNY, quite widely spaced. All other letters are tightly gathered above. When the angle changes to under the table, suddenly all the letters are spread fairly evenly around the table. (00:39:15)
Continuity mistake: When Shuya finds Utsumi dead, the proximity of her head to the girl behind her changes between shots, as does the position of her tie and gun beside her.
Continuity mistake: Japhet the goat steps on a chair but it disappears in the next shot.
Continuity mistake: When John is decoding the numbers for the first time, he uses a whiteboard. On the whiteboard are, presumably, spelling words for Caleb. He erases some of these to make room for the numbers. In the various shots of this scene, words disappear and reappear continuously, often written slightly different.
Continuity mistake: When Sook-Hee is walking up the stairs whilst Sasaki is escorting her through the mansion, she looks at a painting of Hideko as a child. It cuts back to Sook-Hee beginning to turn around a corner in the stairs, but in the next shot, she is further up the staircase. (00:05:38)
Continuity mistake: After Willis rescues the people, he's at breakfast with his son and wife. He slides the newspaper to his son. Close-up on paper (beside orange juice) shows "Bold" typestyle on story slug. Camera pans up to Willis, cuts to son, cut back to newspaper. Suddenly typestyle is italicised (noticeable on "f" in "found"). (01:34:30)