Revealing mistake: When Jason is squeezing Rick's head, just before the eyeball 'pops' out for the 3D effect, it's obviously a dummy's head, as the face is wider and slightly larger than that of the actor's.
pgsgrad16
17th Jul 2019
Friday the 13th Part 3: 3D (1982)
17th Jul 2019
Friday the 13th Part 3: 3D (1982)
Visible crew/equipment: As Chris rushes across the cabin to slam the open window shut, crew members and monitor equipment are moving around in the reflection of the front windows.
17th Jul 2019
Friday the 13th Part 3: 3D (1982)
Other mistake: After Jason slashes Andy in the hallway we see the machete ripping down through Andy's abdomen as he is upside down in his handstand. Then his body falls to the floor and Jason starts dragging him, but there is no blood spatter anywhere on Andy's chest, face, or the floor.