Batman Begins (2005): Codes and Conventions
In Batman Begins it is evident that the film is part of the superhero genre because of the codes and conventions that can be found within the film.
One of these codes and conventions that can be found in the film is the typical backstory of the superhero and in this case it is of the death of Bruce's parents and how he has an ironic fear of bats. It also tells the audience why Bruce becomes batman which is to get revenge for the death of his parents.
Another feature that is common in the superhero genre is the different array of characters/character types some of which are: Hero (Batman) Helper (Alfred) Princess (Rachel) Villain (Scarecrow). These character types are always found in superhero movies so clearly point out to the audience that this is a superhero movie.
at the very end of the film the is also a clever hint towards the next film of the Batman genre which is a very good feature as it keeps the audience hooked and entices them back to pay to see the next film.

