Prieto has become an established cinematographer, working with such names as Spike Lee (25th Hour), Curtis Hanson (8 Mile), Ang Lee (Brokeback Mountain and Lust, Caution) and Pedro Almodóvar (Broken Embraces).
Prieto telah menjadi sinematografer tersohor, berkarya dengan tokoh-tokoh kenamaan seperti Spike Lee (25th Hour), Curtis Hanson (8 Mile), Ang Lee (Brokeback Mountain dan Lust, Caution) dan Pedro Almodóvar (Broken Embraces).