Conclusion

Both Tim Burton and Guy Richie's cinematic style is quite different from eachother but however has tiny similarities which bind both films together in terms of visual elements.

Guy Richie has a style in which he modernizes a film with very clean and slick characters and with a real flexible narrative in the way the story is being told. Furthermore, his style is very authentic and tends to reinvent films like Sherlock Holmes and add a bit more of an action-packed film along with extra features of Sherlock Holmes such as showing him as a really agile character that knows how to fight, like an action superhero. Guy Richie creates a new perspective in the story of Sherlock Holmes and shows it in the most dynamic way and in a way no one has ever seen it before.
Guy Richie tends to reanimate and reimagine most of his films whether they're fictional or factual and generally modernizes the film and gives it this dynamic energetic buzz.
Richie also uses more accurate setting to place the story in so that it is a bit more realistic than Sweeney Todd which shows animations of random Victorian buildings.
In the film, Richie makes Sherlock less mysterious and suspicious in the film which the past films had done but made him cocky, snobby and rather quick witted therefore making him more appealing to viewers of this time and that is what Richie had intended to do and in his other films aswell.
Another way in which Guy Richie modernizes this film is that he does not put in music that is with that time period the characters are in, but stuck to this huge, action-like orchestral music therefore making his films as well as Sherlock more authentic to his style.

Tim Burton's style is rather gloomy and strongly gothic in the way he presents his films. His films are very low-key like in Sweeney Todd and often tends to use blue tint extensively in his films to give it this cold, and creepy effect. In Burton's films, he also tends to make the reds really stand out by making it really saturated. It is often blood like in Sweeney Todd or pieces of clothing on a person, either way it creates almost this same effect of blood as it is majorly surrounded by predominantly dark shades of blues and greys. Burton's cinematic style is that he also tends to make the camera movements really slow and smooth, creating this effect of almost being in the eyes of a creature lurking through dark woods, sewer pipes, creepy tunnels and caves etc. Burton likes to create a ghostly atmosphere in some of his films and often uses animation for credits such as the beginning titles of Sweeney Todd, and again, he highlights the red colours which is blood dripping which is not often used by most film directors therefore making Burton's obsession with highly saturated reds really unique and gives his films a signature touch. Furthermore, Tim Burton also tends to use really exaggerated Foley sounds to emphasise the horror or divert the viewers' attention on something in a scene and often tends to add some sort of musical theme in his films aswell, therefore creating this real juxtaposition with the way the film looks and the music.
In Sweeney Todd, Burton also puts in majorly organ and quite dramatic violin and orchestral music, not as modern as Sherlock Holmes but orchestral music that suits that time period the film is in and a traditional theatre musical composition.