(at around 1h 10 mins) When Pam is running through the woods, her sweater disappears then reappears.
(at around 1h 16 mins) As Jason approaches the smashed barn door, some of the wooden planks in the left side of the door disappear between shots.
(at around 1h 14 mins) Jason chases Pam with a clean machete, however in the shot just before he's hit by the tractor, the machete is bloody.
(at around 36 mins) Lana smears lipstick on her upper right lip, but when she turns at the cat's noise, it is pressed and perfect-looking.
(at around 48 mins) When Pam, Tommy, and Reggie are going to see Demon, they pass the same rocks several times.
When Demon is using the outhouse, his pants are unzipped but not pulled down.
(at around 52 mins) Obvious stunt double for Tommy is beating up on Junior at the trailer park.
(Opening scene) In all close-up shots of Jason, he obviously has black gauze shielding his eyes behind the hockey mask.
(opening scene) When Young Tommy darts away from the grave, you can look at his face and tell it is not Corey Feldman. [In fact, a small woman doubled Feldman in this scene] Also, the flashlight Young Tommy is holding disappears when the shot cuts from the Tommy double to actually Corey Feldman.
Les is called "Brody" in the opening prologue. All of the subs and captions also read "Brody" when he's speaking, so, why is he credited as Les instead of Brody?
(at around 36 mins) The sound that startles Lana was breaking of plates, but when she investigates, she finds the cat sniffing fallen pots.
(at around 34 mins) When Billy pulls up outside the diner to pick up Lana, if you look into the window at the far right of the screen you can see a crew member hide into the corner of the diner so he won't be seen.
When Tommy is at Jason's grave, a white reflector screen is clearly reflected into his glasses.
(at around 24 mins) As Pete walks off into the woods, the cameraman's shadow is briefly visible on his back.
(at around 18 mins) As Joey walks over to Robin and Violet, who are hanging up washing, a large set of lights is reflected in the window as he walks over.
Spoilers: Roy hasn't seen his son joey all his life yet in his wallet he had a current picture of him.
(at around 21 mins) The ambulance is called to Pinehurst. When the ambulance comes to a stop the boom mic can be seen in the bottom part of the rear window.