Choose two technical aspect of filmmaking and show how they have changed since their first use in silent film. Discuss how each the transformation works both technically and what its role or function is (that is, how it reveals something to the audience - how the audience interprets it or "reads" it) in each case. You should show the development in at least three films (one silent - the remaining two can be sound as well. One of the films may be post 1941)

Your paper should discuss the technique and then show how it is used in three films from different time periods.