Sergei Mikhailovich Eisenstein was a Soviet film director, screenwriter, film editor and film theorist. He was a pioneer in the theory and practice of montage. He is noted in particular for his silent films Strike (1925), Battleship Potemkin (1925) and October (1928), as well as the historical epics Alexander Nevsky (1938) and Ivan the Terrible. In its 2012 decennial poll, the magazine Sight & Sound named his Battleship Potemkin the 11th-greatest film of all time.
Eisenstein c. 1920s
The young Sergei with his parents Mikhail and Julia Eisenstein
With Japanese kabuki actor Sadanji Ichikawa II, Moscow, 1928
Eisenstein in 1939
Film editing is both a creative and a technical part of the post-production process of filmmaking. The term is derived from the traditional process of working with film which increasingly involves the use of digital technology. When putting together some sort of video composition, typically, you would need a collection of shots and footages that vary from one another. The act of adjusting the shots you have already taken, and turning them into something new is known as film editing.
A film editor at work in 1946
Screenshot from The Four Troublesome Heads, one of the first films to feature multiple exposures.
Scene from The Great Train Robbery (1903), directed by Edwin Stanton Porter
The original editing machine: an upright Moviola.