This thesis focuses on the importance of light as one of the main aspects of filmmaking and as a main tool for creation of atmosphere in cinematography. I mention some expressive cinematographer's styles in the history of cinematography and how different the work with light was in the context of the era. I focus on realistic and logical way of work with light and on technical and technological cinematographer's tools which enable this work and help him to create the light atmospheres and support the script to be perfectly visually translated.