A person who operates a telecine transfer device and its associated equipment, including color correctors, telecine machine controllers, and sound equipment.
The title used for someone who operates a telecine machine to transfer film to video. Part of the process involves correcting the video color to match the film.
Be careful which one you use: a colorist is a musician wielding a wide sonic palette; a colorer is a three-year-old wielding an eight-pack of Crayolas. For "sonic palette," see "color."