Benjamin Braddock appears in every scene of The Graduate. So we're seeing everything from his perspective—at times, literally, like when we see his perspective from inside his new scuba-diving suit. We don't get to see what Mrs. Robinson is like when she and her husband are alone, or when she and Elaine are alone (they're in the same frame only once). We only learn the things that Ben learns about them, which helps to tighten the focus of the movie on his problems and concerns.

The movie really is a character study of Ben, so this makes sense. But it's interesting to think how we might view the movie differently if we could see other characters when they're not interacting with Ben. We might feel more sympathetic to Mrs. Robinson or come to understand her better. We also might see more of Mr. Robinson and feel for him as a character too. Yet the movie's focus on Ben prevents us from wildly indulging our empathy all over the place: we have to pay attention, mainly, to him.