From looking at early films during the 1920's - 1970's I have learnt that cinematography has changed dramatically over that period of time. In the 1920's movies, such as "Childhood Days", no sound was included and the film was 1 minute long. The knowledge of camera shots and angles were not varied as this film consisted of one pan and a still shot only. As the film was silent, no dialogue could be used to develop characterisation therefore the film did not have an excting narrative like there are today. The use of colour was limited as the films were black and white. 

As I explored films from the 1930's, I discovered that sound had developed as the films were no longer silent. This meant that characterisation was possible as dialogue from actors were used. Digetic and non-digetic sound was also used to help develop narrative and tone. Even though sound was made, the quality of it was not brilliant. Hitchcock's film "39 Steps" included improoved transitions and camera shots, which made the film more exciting to watch. The film also had a title sequence at the beginning, teling the audience who was involved in the production. This film also had proffesional film sets that were not used in the 1920's which shows production values had improved. This Hitchcock film was aware of foregroud, midground and background, which made each scene have more depth and detail as you were aware of different heirachy's in the scene. 

Once I started analysing 1940's films I understood that the film industry was more willing to make films about cultural topics including the war and different countries. This point being apparent when I watched "Father and Son" (1946). Although the film was in black and white, they explored relevant topics in their country of Zanzibar. They also included more creative and interesting shots such as establishing shots. In addition to this development, this film included a voice over technique to forward the plot. They also included non digetic sound such as waves whilst they filmed scenes on the sea. 

Once I started looking at 1950's films it was interesting to see how some films introduced colour and some did not. One film that did was "Sunshine is Soho", which was a film made by Columbia. Due to Columbia being an American, well known production company - this film was able to afford colour wheras some films such as "The Pit" did not due to it being made by an unknown English producer. Although the colour in "Sunshine in Soho" was not of the best quality it was still a massive development in film making. 

Finally, I looked at 1970's films where there was a huge improvement. Most films were made in colour by this point and the colour within the film "The Railway Children" was of a higher quality. The film also included animation, which was a new development. They also used interesting shots such as POV shots and an upside down shot to create the impression of confusement within a scene. They also had technology such as a camera within the film, which shows the enhancement of technology during this period.