Cuarón Alfonso Roma BW

Alfonso Cuarón: Roma Black-and-White

Alfonso Cuarón's Roma (2018) is simultaneously a deeply personal memoir film - a tribute to Liboria 'Libo' Rodríguez, the domestic worker who raised him in 1970s Mexico City - and a formally radical act: Cuarón acted as his own director of photography, shooting digitally on the ARRI Alexa 65 large-format system and converting to black-and-white in post, producing images of a scale and precision rarely seen outside large-format film photography.

Technical Foundation: ARRI Alexa 65

Cuarón chose the ARRI Alexa 65 - a digital cinema camera using a sensor larger than standard 35mm film - for its ability to resolve extreme detail and dynamic range. The camera captured in color, and the black-and-white conversion was performed digitally in post-production, giving Cuarón precise control over luminance relationships that photochemical B&W cannot offer.

Lenses were primarily spherical (35-65mm range), chosen for minimal distortion while maintaining the environmental presence that Cuarón's observational style requires. The depth of field was calculated to keep the Colonia Roma neighborhood's architecture in focus throughout, making the built environment of 1970s Mexico City a constant, equally-weighted presence alongside the human subjects.

Observational Long Take Grammar

Roma's cinematographic grammar is built on extended panning master shots. The camera is typically positioned in a wide establishing view and then rotates - sometimes 180 degrees or more - following characters as they move through domestic and public spaces. This panning master technique derives from a tradition of observational documentary filmmaking: the camera follows behavior rather than anticipating it, and the viewer is asked to actively locate the narrative center within the wide field.

The most analyzed shot in the film is the beachside sequence, where the camera pans from the crash of Pacific Ocean waves to the figures of Cleo and the children in the shore break, then back to the horizon and the approaching sea. The shot's duration (approximately 90 seconds) and its insistence on keeping all elements - sea, family, horizon - simultaneously visible is a formal argument about scale, insignificance, and love.

Black-and-White as Temporal Signal

Cuarón has stated that black-and-white was essential to Roma because it creates a visual language of memory and historical past that color resists. The black-and-white removes the film from the comfortable visual specificity of period television reconstruction and places it in the continuous cinematic tradition of personal documentary and neorealist fiction.

The luminance relationships in the grade were calibrated to the specific light qualities of Mexico City's colonial street architecture: concrete walls, tile roofs, and courtyards that yield a silvery diffuse exterior light in the winter rainy season that the large-format sensor could resolve with extraordinary detail.

Context and Reception

Roma won the Golden Lion at Venice 2018, the Academy Award for Best Cinematography, and Best Director - the first film to win both cinematography and directing awards for the same individual since the Lumière Brothers.