Anamorphic photography uses optical compression and later desqueezing to capture a wider field of view. The characteristic flare and bokeh associated with many anamorphic lenses are optical consequences or design traits, not requirements of the aspect ratio itself.
This article was developed from cinematography optics references and cross-checked against Academy filmmaking education and professional cinema/cinematography documentation where applicable. Technical standards can evolve, so delivery specifications should always be checked against the current production or exhibition requirement.