how would the novel be different characters perspective? jem? atticuis?

Jem and Atticus' perceptions would initially be different because of their ages. Atticus is an adult. He's had adult experiences, and he's seen a number of changes over the course of his life. Jem is a young boy. He's full of optimism and believes his father can do most anything. Scout is, of course, a girl. Girl's see things differently.