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 scene where a lamp fell from the sky in front of Truman, the damage caused to it seemed somewhat insubstantial, bearing in mind the height from which it surely must have fallen in order for it not to be visible from the ground in the first place. (00:03:15)
Suggested correction: The reason it wasn't visible in the first place is because there was a screen/cover on the walls of the dome as shown at the end. Not to mention those lights are heavy duty, mostly made of metal so it's extremely likely that it could have fallen from a height like that (probably the height of a 20 story building) and gotten the damage that it did.