Individual analysis of Genre.

Horror

Horror, is a genre of film which is depicted by it's lighting, theme and acting. The main concepts of the film are such things as Dark lighting creating shadows within the film. 

Themes

Themes within horror can be such things like Supernatural or Psychological themes. The themes within horror may deal with peoples fears, such as a fear of spiders in the movie 8 legged freaks (2002)  The film depicts a story where spiders have grown to astronomical size and prey on human beings, this can alert the viewer and prey on their fear of spiders and cause a feeling of discomfort.

Films may also prey on other things such as the supernatural in which an alien operation to take over the earth ensues such as what is shown in War of the worlds, where the Earth is under attack from alien forces of the unknown which is not known until the ending of the film. 

Stereotypical things which can be shown within the horror genre is things such as Zombies, vampires and cannibals.

Horror movies first came around with the creation of silent short films within the 1890s by the pioneer Georges Méliès who's first depiction of horror films was the silent short The Haunted Castle.

Lighting

Lighting within horror films is generally dark and depressing, grasping the viewer and showing some sort of unknown danger within the darkness. This makes the viewer think and wonder what is in the darkness. Films which have dark lighting usually have sadistic themes, such as SAW films or Hostel, where there is a  serial killer on the loose killing people to no succesion of the police.

Other films which in my opinion use lighting well are supernatural films, such as Alien vs. Predator, in which the darkness can indicate imminent danger, unknown danger however imminent.