Very little is known of Armitage's life, other than he was born in Seneca Falls, New York; his earliest known credits date from 1898. It isn't until 1899 when Armitage begins to collect a substantial number of film credits; he is credited with photographing 188 AM&B subjects in 1899 alone. Several of the actualities Armitage filmed that year had to do with the end of the
Spanish–American War, including views of the battleships which fought in it and the welcome home parade thrown for
Admiral Dewey in New York City. On June 9, 1899, Armitage was one of three Biograph cameramen to photograph the heavyweight championship bout between
Jim Jeffries and
Tom Sharkey, the finished film running a then-record time of 135 minutes. '' (1900), in which waves are superimposed on a dancer From 1900, Armitage began making a small number of films which utilized what would have then been considered trick effects; in two very similar subjects,
The Prince of Darkness and
A Terrible Night, Armitage reversed the negative so that the clothes a man removed seemed to be leaping back at him. In
A Nymph of the Waves, Armitage combined two previously existing subjects in a printer in order to create a subject in which a dancer appeared to be floating on top of waves from Niagara Falls; Armitage used a similar technique in ''Davey Jones' Locker
(1900). Armitage deliberately projected part of the negative in The Ghost Train
(1901) and used time lapse photography—taken over a period of a month—in Demolishing and Building Up The Star Theater
(1901). His most astonishing achievement, however, is the time-lapse subject Down the Hudson'' (1903), in which Armitage and fellow AM&B cinematographer
A. E. Weed filmed a voyage down the Hudson River from Haverstraw Bay to Newburgh in single frames, producing a film lasting three minutes. Among other interesting films that Armitage shot or directed during his AM&B period were some early martial arts films, films of
Buffalo Bill's Wild West Show, actress
Anna Held, music-hall singer
Eugénie Fougère, and a silent film of
Sousa's Band, short chapters of attempted "story films" on the popular plays
Ten Nights in a Bar-Room (1901) and
The Wages of Sin (1901), a number of subjects of American landmarks for the U.S. Department of the Interior and films of Native American life for the agency then called the U.S. Indian Department. Armitage's last known work for AM&B was as cinematographer on
Wallace McCutcheon Sr.'s
The Nihilists (1905) and
Wanted: A Dog (1905). Shortly afterward, he and McCutcheon both defected to the
Edison Manufacturing Company. Though McCutcheon would return to AM&B in 1907, Armitage remained at Edison through at least 1910, working as a cinematographer with directors
Edwin S. Porter and
J. Searle Dawley. His whereabouts afterward are unclear; Armitage is credited with the cinematography on two obscure states rights features in 1916–1917, and then he vanishes from the historical record completely, until his recorded death on January 3, 1933. ==Legacy==