Visible crew/equipment: When Truman takes his high school sweetheart to the beach, her "father" comes to get her. There is a shot through the father's button cam showing Truman backing away. Look at Truman's shirt and you will see not one but two human shadows. One is the father and the other is the "button" cameraman. (00:25:30)
Visible crew/equipment: After Truman sees his father as a homeless man there is a scene where he runs into a vehicle (before the dog runs past). This shot is from the ground looking up. Take a look at the reflection in the passing car, you can see the crew and equipment. (00:15:50)
Continuity mistake: When the lamp falls, an aerial angle shows that the street is in the shadows. In the following angle the street is sunny. (00:03:15)
Suggested correction: As the lamp hits the road, the shadows of the houses and posts are regular. When the angle changes to look at Truman from between the posts, the shadows haven't changed. Only the angle we're looking at him, and so the angle we see the shadows.
Continuity mistake: In the boat after the storm, Truman has a rope going over his thigh. A second later it is tied around by a big knot. (01:28:15)
Continuity mistake: In the scene just before Truman sees his dad as a homeless man, there is a woman in a white sweater holding a shopping bag in her right hand. When Truman turns, the bag switches to her left. (00:15:05)