In the Maltese Falcon, these key elements can be clearly seen throughout the film. This particular movie does not challenge the "definition" of film noir most likely because it is one of the earliest examples and because it establishes most of those same elements. Sam Spade is a character that sets the pace for film noirs to come. He is a detective (who wears a trench coat) whose partner is murdered after a woman (who has been lying) hires him to tail a man. In this sentence alone there are several elements of noir. However, in Touch of Evil, Mike Vargas does not follow this strict set of rules and throws off the idea of generic film noir. He is not necessarily washed up, there is no femme fatale, and the police are lying to him rather than the criminals. This does not fit the Sam Spade mold at all. In Chinatown, Jake Gittes follows suit after Sam Spade better than Mike Vargas. Even though this movie was filmed in the 70's and was set in the 30's, it still captured the key ideas of film noir. Jake is a detective who is being lied to by the femme fatale, Evelyn Mulwray, and he ends up investigating a murder. In Sin City there are several different stories, some that follow film noir more closely than others. The best example would probably be the story of John Hartigan (also wears trench coat) who is a police officer about to retire, aka washed up. He is betrayed by his partner when trying to save a little girl, Nancy, and eventually tries to find her when she is older in order to save her. What he doesn't know is that the people who pretended to hurt the girl are using to him to find to her. In the end he kills the man who is after Nancy and then also kills himself to protect her from any more thugs or criminals, aka moral ambiguity.
Most all of these movies have some sort of theme relating to moral ambiguity and shifty alliances. In Maltese Falcon it is both. Sam Spade is conflicted with the choice to help the police, the woman, her enemies, or himself. In Touch of Evil it is also both, however it is from a different perspective. Instead of Mike Vargas having these conflicts, it is Captain Hank Quinlan who is lying and shifting alliances with those around him. In Chinatown, Jake Gittes also faces moral ambiguity with the law and also shifts his alliance with them, both before the setting of the movie and then also during it. In Sin City it is the conflict between Hartigan and his partner, and the conflict between doing things by the book or breaking the law to serve justice. All of these themes can be defined as film noir.
If these themes can be defined as film noir then surely that is all that matters when establishing it as a genre, right? Wrong. Other aspects such as cinematography play a large role in how a film noir is told. The use of shadows and vertical lines is a reoccurring aspect that shows up in almost all of these films. Chinatown and Sin City stray the most from this visual aspect, mostly because they were created later than the other two. However, they still create their own unique style of film noir-esque shadowing and lighting. The vertical lines used throughout these movies creates a sort of prison cell feel that portrays how characters become trapped by their twisted lies and shifty alliances.
Another aspect of film noir is the period in which they were originally filmed. Most people will say that film noir only existed between the 30's to the 50's. This is contributed to the culture of the certain era in which the movies were filmed. The post-war realism of this time period created an audience that demanded a different style of film that showed the harsh reality of everyday people. This puts forward the idea that film noir cannot be repeated but is rather a genre locked in time. Technologies in modern cinematography are far superior to that of the original film noir period. This lack of technology is said to add another element to the movies that modern film cannot. Themes from film noir can be easily repeated but not in the same way. Many have tried to remake classic film noirs and have failed miserably. D.O.A. is a perfect example of a film noir that got butchered. This film was originally shot in 1950 and followed the basic key elements of film noir. A re-make was done in 1988 that was simply awful. It did not follow any of the key elements of film noir nor did it follow the original plot.
There is still no one specific definition of film noir but rather peoples opinions and observations. There is definitely a uniqueness to these types of movies that have made them stand and and be questioned as to what they are. Even though movies like Chinatown and Sin City try to re-create film noir, they cannot be called film noir but rather neo-noir which can be considered another genre of its own. This is only one mans perspective of film noir only after watching these four movies, but I believe that film noir is indeed a genre but not one that can ever be duplicated. It is a genre confined to the annals of time that can only be watched and studied but not re-created.
Here's a list I found, from someone elses perspective, giving some more in depth film noir characteristics:
- Urban environment
- Rain-soaked streets
- Seedy taverns, diners, and run-down buildings
- Claustrophobic interiors
- Flickering street lamps
- Neon signs
- Scenes appear dark, as if lit for night, with many dark shadows
- Oblique and vertical lines, especially in regards to lighting
- Shadows
- Films done in black and white
- Narration, especially flash-back narration
- Criminal underworld
- Hopelessness
- Corruption
- The "heroes" tend to be morally ambiguous, alienated from society, and
- have a fatalistic outlook.
- Characters torn by psychological conflict
- The femme fatale