Final answer:
Sergei Eisenstein was a seminal figure in the field of film due to his innovative directing, use of montage, and theoretical contributions to cinema. His influential films like 'The Battleship Potemkin' and 'Strike' utilized advanced camera and editing techniques to powerfully depict class struggles.
Step-by-step explanation:
Sergei Eisenstein is well known for his pioneering work in the field of film directing and montage theory. Working during the early 20th century, Eisenstein was a key figure in Russian and Soviet cinema and left a profound impact on global film practices.
He crafted influential movies like The Battleship Potemkin and Strike, both released in 1925, which are famed for their creative editing and powerful use of visual metaphor to depict class struggle and revolutionary sentiment. Not only did Eisenstein excel in film direction, but he also engaged in significant theoretical work, analyzing and writing about the art of filmmaking.
Eisenstein's films were especially renowned for their complex narrative structure, dramatic use of camera angles, and advanced editing techniques which he, most notably, termed 'montage'. His methods helped portray the tensions and triumphs of the workers' struggle in a unique and evocative manner. His work was revolutionary at the time, advancing the capability of the film medium to communicate complex and emotional stories in a more sophisticated way.