Takis Diamantopoulos was born on 8 October 1949 in Athens, Greece. Since 1960, he was involved professionally with photography. He came from a family of photographers. Both his grandfather as well as his father were successful professional ones. It is at his father's side that Takis had his first photography lessons, assisting him for 10 years up to 1975. In 1968, he got involved with fashion photography. When he became 20 years old he began shooting the National Theater's productions at the ancient Theater of Epidaurus. In 1972, he undertook his first shooting for the French Vogue. From 1975 until 1980 he set up a studio with his brother Dinos (1952-2008), also a photographer, and for two years starting in 1979 they jointly published 'Cover' magazine. From 1981-1983 Takis lived in Paris and Milan where he worked with the publishing house Condé Nast. He undertook various advertising projects while his photographs prominently featured in many Greek and international magazine, such as Stern; Madame Figaro, Marie Claire, Tahidromos; Vimagazino; Men; Status; Downtown; Nitro; Klik; Gyneka; Diva; Cigar; Prossopa; and Votre Beauté. They are mainly fashion shoots and portraits of notable Greeks, including intellectuals, artists and actors, who have positively impacted and brightened the cultural life of his country. He collaborated with Chrisitie's Fine Art Auction House. In 2010 he was awarded from the association 'Together For The Children' for his charity contribution, through the creation of childrens' portraits.
Takis Diamantopoulos presented the following personal exhibitions: Photographs from the White Book, Zoumboulakis Gallery, Athens (2008); Photographs from the White Book, Donopoulos International Fine Arts, Mylos, Thessaloniki (2008). He also published the following albums: 33 Years of Photography (Kastaniotis Editions, Athens 1999); 200 + 4 Important Greeks (Liberis Publications, Athens 2004); White Book (Kastaniotis Editions, Athens 2008).