In 1991 he won the renowned Goya Award for Best Cinematography in Las cartas de Alou (released 1990).
1991 he filmed for Pedro Almodóvar's Tacones lejanos (High Heels); the two worked together again on Kika (1993).
At this time he also started to film for Marcelo Piñeyro, for Caballos Salvajes; Mayo went on to be the cinematographer with whom Piñeyro worked in all films that he directed alone (i.e. except Historias de Argentina en vivo), including the critically well-received Plata quemada (2000) and Kamchatka (2002).
Mayo also worked with Fernando León de Aranoa on three occasions (Barrio in 1998, Familia in 1996, and award-winning Los lunes al sol in 2002).
Apart from the Goya Award for Best Cinematography in Las Cartas de Alou (1991) and the two further Goya nominations, Mayo won three Argentine Film Critics Association Awards ("Silver Condors") for the Piñeyro films Cenizas del paraíso (1998), Plata quemada (2001) and Kamchatka (2003).