Lord of the flies - Andreas, Anders, Jeppe and Martin.

Piggy: He is still restricted by his aunts teachings. He is still the outcast of the group, who is the one the others pick on. He is however eager to prove his worth and earn the group's acceptance by joining the expedition.

Ralph: He is the one who stands out from the crowd, and is elected as chief because of his still, attraktive appearance.

Jack: He is the arrogant, leader type. Leader of the choir boys, and the only person who is able to sing a clean C note, which automatically grants him the title "leader of the choir-boys". This inconsistent with the scene of the election, because he is normally the one in charge, but now he has to answer to Ralph's bidding.

Comment upon the voting and the conch:
The conch starts out as a very democratic solution to having meetings, and will keep on symbolizing democracy and order throughout the film (until it is smashed).
The children vote for their leader, because they come from a democracy, end therefore tries to keep their world together by doing as they did at home. That would have been fair enough, if they had not judged the two leaders upon their fathers’ achievements and work. They do not vote for Ralph, they vote for his father.

Differences:
The boys in the book starts out apart from each other, and in the film, they are together from the start. This leads to further differences (for example when Ralph and Piggy in the book finds water while on their own, while in the film it is a random boy who discovers it.).

Furthermore, we are introduced to more of the kids in the book that we are in the film.

Also, in the film there is an adult male survivor which is not the case in the book. The book also gives a more nuanced picture of the story. Moreover, the voting in the book is suggested by Ralph, and jack himself suggests that he should be leader, which also varies in the film.

These are major differences that influence the action in the film greatly. The film cannot be said to depict the book very accurately, and the differences, in my opinion, makes the film worse. The themes are not brought up in the same way as they are in the book.

Comparing the clips with the book:

They differ in some ways. The book starts when Ralph wakes, and not as in the movie, where all the boys reaches shore together. The great differences in the film is, that all the boys arrives at the same time, together. And therefore everyone bathes in the filmclips.

Furthermore, we also get to know some different characters in the book. Johnny and the twins are great examples of precise that!

The voting also is slight different. In the book, Jack suggests himself as the leader, unlike in the film. And Ralph does not mention that it is of no matter who becomes the leader in the novel.

Otherwise, the film follows the novel quite chronologically - it would be odd if it did not.