When you look at film openings there are 3 main basic structures that are followed:
1. A Narrative opening with the titles running throughout;
This is when titles appear while the story is being revealed, the titles are surrounding the film. Some examples of narrative openings are The Shining, The Stepfather and De ja vu.
This is the opening to DE ja vu:
2. A Discrete title sequence;
This is when the title sequence is separated from the film, its on its own. It is by itself on a background e.g. it'll show some film and then show a title and then show some more film. Examples of discrete title sequences are Arligtion road, James bond and seven etc.
I think that seven is a really good opening sequence, it grabs the attention of the reader straight away with the scary & chilling start. The opening of seven uses a lot of close up, i think that this is good because it creates suspense because the audience don't kw what is actually happening. All they can see is what the director wants them to see. The implications for this is that the audience will want to watch the rest of the film to figure out what all these little snippets of film reveal after.
This is the title sequence to seven: