Similar and Different conventions within the trailers

Similarities
- They all tend use the same range of camera shots, this tends to be mainly close ups.
- Most of the trailers tend to use the same lighting and colours, predominantly low lighting and dim/dull colours.
- The most common convention i have noticed is to have the setting to be somewhere at the night, i feel this is used to create more suspense for the audience.
- Typically text comes to the end of the trailer. Yet there are also sometimes small quotes added in between shots. 
- All of the trailers seem to have a similar duration of around 1:30-2:30.
- They all use similar transitions and methods of cut scenes as forms of edits between scenes.

Diffrences
- All vary in length, yet are no longer than 2:30 minutes.
- They all use different sounds some opting for music soundtracks, others just tend to use natural sounds to create an effect.
- 28 days later has the main part of its trailer set in the day and others are set prominently at night.

- Saw IV shows text throughout the trailer rather than just typically having it towards the end of the trailer.