Codes and Conventions of film posters

In this movie poster, it includes a billing block which proves this is a movie poster. The tomorrow is highlighted representing from the background, that there might not be a tomorrow. Furthermore, usually a human's eye starts from the left to the right, and the main actor's name, Tom Cruise, who is very famous is on the left. However, Tom Cruise appears on the right of the poster, and the other main actor is on the left, creating equality. It is also represents the action genre with the actors holding weapons and wearing armour. 

The advertisement also shows that it is a movie as in shows at the bottom "Coming Soon".

In this movie poster, it also includes a billing block at the bottom of the poster, it also includes a release date for the film. In addition it includes a tag line. Through the facial expressions of the actors in the advertisement, you can determine the genre to be a comedy movie. Furthermore, the actors in this movie are well known in the comedy category. 

Once again, this movie poster includes a strap line, a billing block and the movie actors name which is at the top. Through the image you can tell that this movie might be a thriller as it's building suspense on who the person is inside of the main character.
It is also known that Gerard Butler is starred in many thriller movies.