Elgin Lessley

Elgin Lessley (also credited as Lesly, Lessly, and Leslie) (June 10, 1883 - January 10, 1944) was an American hand-crank cameraman of the silent film era—a period of filmmaking when virtually all special effects work had to be produced inside the camera during filming. Though Lessley worked earlier with Roscoe "Fatty" Arbuckle, and later with Harry Langdon, he is best known for the groundbreaking effects he produced with Buster Keaton, who dubbed him "the human metronome" for his ability to crank consistently at any requested speed.