Things twist around
Setting is going to be in there. I'll be looking at setting as more than just time and place, though. What does the setting say about the culture, class, the whole relationship to the environment. Some of the points here are A) The telescreen is omnipresent, always something being said; this makes the point about the bombardment of the senses. B) Cultural elements seemed to be a bit panned over-they don't bear the same import of the book, eg dollars for pounds, liters for pints, tea and the coral. C) Music is used in the film; diagetic music such as Oceania 'Tis for thee, and non diagetic music by the eurythmics which appears in Winston's various dreams. D) The sense of surveillance isn't there for the film as it is for the book.
Characterizations in the film are different. They're much more low key than than the novel. A) The Parsons' children are muted and tired in the film whereas in the book they gamboled about like lions around a kill. B) Charrington's lines are editted that he comes across in an almost surreal manner, or at least out of sorts. C) Winston Smith does not have the nervous panic that the book gives him-the stress he has simply trying to write his first journal entry is gone, the idea of killing Julia when she sees him in the prole sector is gone.
There are other changes which flow from the screenplay, such as A) Language. Radford really tries to push Newspeak, which is good. However he changes the term "Comrade" to "brother" and "sister". Comrade Ogilvy is still Comrade Ogilvy, but in verious other places, the change is made. B) Themes. The themes of malleability of reality is still there. The Alienation, though, seems curbed off. Winston's disgust for his fellow party members, the Parsons' children's treacherous loyalty to big brother, get boiled down to one invented speach. C) The ending is different; the film's is abbreviated.
perhaps this is worth it, perhaps.