Pan and scan is a method of adjusting widescreen film images so that they can be shown within the proportions of a standard definition 4:3 aspect ratio television screen, often cropping off the sides of the original widescreen image to focus on the composition's most important aspects. Some film directors and film enthusiasts disapprove of pan and scan cropping, because it can remove up to 45% (on 2.35:1 films) of the original image, changing the director or cinematographer's original vision and intentions. The vertical equivalent is known as "tilt and scan" or "reverse pan and scan". The method was most common in the days of VHS, before widescreen home media such as DVD and Blu-ray.

For the first several decades of television broadcasting, sets displayed images with a 4:3 aspect ratio in which the width is 1.33 times the height—similar to most theatrical films prior to 1960. This was fine for pre-1953 films such as The Wizard of Oz or Casablanca. Meanwhile, in order to compete with television and lure audiences away from their sets, producers of theatrical motion pictures began to use "widescreen" formats such as Cinemascope and Todd-AO in the early-to-mid 1950s, which enable more panoramic vistas and present other compositional opportunities. Although the aspect ratio was the height of a television screen, these formats might be twice as wide as a TV screen when televised. To present a widescreen movie on such a television requires one of two techniques to accommodate this difference: One is "letterboxing", which preserves the original theatrical aspect ratio, but is not as tall as a standard television screen, leaving black bars at the top and bottom of the screen; the other more common technique is to "pan and scan", filling the full height of the screen, but cropping it horizontally. Pan and scan cuts out as much as one-third of the image.

Kenneth Lauren "Ken" Burns (born July 29, 1953) is an American director and producer of documentary films, known for his style of using archival footage and photographs. Among his productions are The Civil War (1990), Baseball (1994), Jazz (2001), The War (2007), The National Parks: America's Best Idea (2009) and Prohibition (2011).

Burns' documentaries have been nominated for two Academy Awards, and have won Emmy Awards, among other honors.

Ken Burns was born in 1953 in Brooklyn, New York City, New York, according to his official website, though some sources give Ann Arbor, Michigan, and some, including The New York Times, give both Brooklyn and Ann Arbor. The son of Lyla Smith (née Tupper) Burns, a biotechnician, and Robert Kyle Burns, at the time a graduate student in cultural anthropology at Columbia University, in Manhattan. Ken Burns' brother is the documentary filmmaker Ric Burns.

Burns' academic family moved frequently, and lived in Saint-Véran, France; Newark, Delaware; and Ann Arbor, where his father taught at the University of Michigan. Burns' mother was diagnosed with breast cancer when Burns was 3, and died when he was 11, a circumstance that he said helped shape his career; he credited his father-in-law, a psychologist, with a signal insight: "He told me that my whole work was an attempt to make people long gone come back alive.". Well-read as a child, he absorbed the family encyclopedia, preferring history to fiction. Upon receiving an 8 mm film movie camera for his 17th birthday, he shot a documentary about an Ann Arbor factory. Turning down reduced tuition at the University of Michigan, he attended the new Hampshire College, an alternative school in Amherst, Massachusetts with narrative evaluations rather than letter grades and self-directed academic concentrations instead of traditional majors. He worked in a record store to pay his tuition.