The opening sequence to The Conjuring creates an era which makes the audience establish the genre the film. The semantic field of death automatically informs the audience of the negativity that will be involved throughout the film. The articles surrounding the plague foreshadow the narrative which appears later on in the play.
The black and white motif creates an effect which makes you feel as if the film is older than it is, this makes the audience sense that someone is odd.
Using actual pictures from a time when they only had black and white makes the audience feel more taken back there, to that time.
The diagetic sound of someone walking/running across a room and exiting through a door with a bell, gives the feeling that you aren't alone in watching the film as if throughout the whole of the film there will be someone watching you.
The titles are kinda of irrelevant because they don't really draw your attention, however the images wouldn't look right if the titles weren't there.