Segal initially studied chemistry at university, where she discovered cinema and developed an interest in cinematography. With no prior connections to the film industry, she approached Panavision to learn about camera equipment and subsequently began working as a camera trainee and loader on productions in the United Kingdom and New York. She later trained in cinematography at the National Film and Television School (NFTS) in the UK.
Nanu’s early feature credits include Shrooms (2007), directed by Paddy Breathnach, and Donkey Punch (2008), directed by Olly Blackburn. She photographed Alicia Duffy’s All Good Children (2010), which screened at the Cannes Film Festival, and Hope Dickson Leach’s The Levelling (2016), selected for the Toronto International Film Festival and the BFI London Film Festival.
Her subsequent feature work includes Old Boys (2018), directed by Toby MacDonald; An Evening with Beverly Luff Linn (2018), directed by Jim Hosking; Bike Thief (2020), directed by Matt Chambers; Marvelous and the Black Hole (2021), directed by Kate Tsang; Emily (2022), directed by Frances O’Connor; and Hoard (2023), directed by Luna Carmoon. She also worked as second-unit director of photography on Bohemian Rhapsody (2018).
Segal’s television credits include the BBC Scotland drama Guilt, for which she received the Royal Television Society Scotland award for Best Camera in 2020, and the espionage miniseries A Spy Among Friends (2022). Her later work includes the Netflix film Scoop (2024), directed by Philip Martin, and The Radleys (2024), directed by Euros Lyn.