Born on January 28, 1961, in Luxembourg, Guy Fonck discovered photography in 1968 with his first camera, an Agfa Click. By 1975, his photographs were already being recognized in various national and international exhibitions. In 1977, he joined the jazzclubluxembourg and began photographing concerts and festivals in black and white, photos which he developed himself in his darkroom.

Between 1979 and 1995, his work was regularly exhibited and received awards at the Internationaler Fotosalon Zeitgenössischer Musik in Burghausen, Germany. In 1984, he took part in the Nikon Meets Jazz competition and published photographs in the Swiss magazine Jazz. This was followed by a permanent exhibition at the Malakoff Jazz Café and his participation in the 1987 exhibition Carte Blanche aux photographes luxembourgeois (Zone 6 a.s.b.l.).

From 1986 onward, Guy Fonck became deeply involved in organizing concerts and festivals, including the Jazz Rallye Luxembourg and various events during Luxembourg 1995 – European Capital of Culture. This commitment led him to step away from photography for nearly ten years. During this period, he became a regular contributor to Phare (published by Tageblatt) and hosted a jazz program on Radio 100.7.

In 2003, digital photography brought him back behind the camera, and he resumed photographing jazz in black and white while continuing to be responsible for the programming of the jazzclubluxembourg until 2007. His photographs were published in the Luxemburger Wort, and from 2008 onward, he also resumed his collaboration with Tageblatt.

In 2007, he served as a jury member for the Eurodjango Eurojazz Awards and was the event's official photographer. That same year, his work was exhibited at the Luxembourg Conservatory. In 2010, he presented an exhibition of 55 photographs in the cloister of Neumünster Abbey, following the publication of his first book, Focus On Jazz (Blurb 2009).

In 2011, he contributed to JAZZ: The Smithsonian Anthology, published by Smithsonian Folkways Recordings. In 2013, the German publisher Schroedel featured one of his photographs in a school textbook. In 2019, he photographed for the magazine Jazz in Europe and his photographic work was featured in a portrait Guy Fonck - Jazz from behind the lens.

The year 2024 saw the publication of his second book, Focus On Women In Jazz (Éditions Schortgen), which was praised by Women In Jazz Media London. In 2025, he contributed a photo to the album cover of Proximity Alert by Russ Lossing before receiving awards at the Yambol Jazz Photo Contest in Bulgaria. That same year, Focus On Women In Jazz was nominated for the "Lëtzebuerger Buchpräis" in the "Thematic Book" category.

In 2026 he participated again in the International Photo Contest Jazz in Bulgaria where three of his photos earned IAAP Gold, IAAP Bronze respectively DIPA Silver.

His photos can be viewed on the Internet at All About Jazz USA, at Focus On Jazz, as well as on Instagram and Facebook under Focus On Jazz by Guy Fonck.

Many thanks to Jeannot Thomé, Wolf von Leipzig, Änder Brepsom and Marc Linster for their help with the design, the graphics and the texts for this website.