During a internship experience in 2005 at the Journalism’s Institute « José Marti » in Cuba, Thomas Freteur became attached to documentary photography.
In 2006, with Pauline Beugnies and Colin Delfosse, they founded the photographers' collective "Out of focus", based in Brussels.

Since then, Thomas has been working as a freelance photographer in Belgium and abroad. Beside this, he often leads photoworkshops for associations and NGO’s. In 2012, he organized and took part to a longterm photoworkshop in Haiti.
Nowadays, Thomas is based in Port-au-Prince although he is working on photos projects around Belgium and Haïti.