like Daniel Buren, On Kawara, and Hanne Darboven. He was represented in Paris and New York by Yvon Lambert and in Venice by Galleria Michela Rizzo. In 1968 Opałka introduced to the process a tape recorder, speaking each number into the microphone as he painted it, and also began taking passport-style photographs of himself standing before the canvas after each day's work. In 2007 Opałka participated at the symposium "Personal Structures Time–Space–Existence" a project initiated by the artist Rene Rietmeyer. The final number he painted was . Exhibitions Opałka participated in many of the art world’s most important international exhibitions, including Documenta in Kassel, Germany, in 1977; the São Paulo Bienal in 1987; and the Venice Biennale, in 1995, 2003, 2011 and 2013. He was represented in Paris and New York by Yvon Lambert, in Venice by Galleria Michela Rizzo and, for many years, at John Weber in New York. In 2003, exhibited his work through 's exhibition (the curator was Alain Julien-Laferrière). In 2017, Opałka has made part of the exhibition "Il mio corpo nel tempo / Lüthi Ontani Opalka", Galleria d'Arte Moderna, Verona 2017. Catalogue Manfredi Edizioni. Collections Opałka's works can be found in the permanent collections of the Centre Pompidou in Paris and New York’s Museum of Modern Art among others. Recognition Opałka won the celebrated Grand Prize of the 7th International Biennial of Arts and Graphics of Cracow in 1969, the C. K. Norwid Art Critics Award in 1970, Franceʼs National Painting Prize in 1991 and Germanyʼs Goslarer Kaiserring in 1993. He was named Commander of the Ordre des Arts et des Lettres (Order of Arts and of Letters) in France. In 2009, he was awarded Medal for Merit to Culture – Gloria Artis by the Minister of Culture and National Heritage Bogdan Zdrojewski. In 2011, the President of Poland Bronisław Komorowski awarded him with Commander's Cross of the Order of Polonia Restituta. In 2011 Opalka was awarded by the European Cultural Centre Art Award for his life long depiction of "Time Passing". Legacy In 2005 the German art project "Camera Obscura 2005/1-∞" was initiated as an homage to Opałka's life and work. It honours his work by selling camera obscuras — with two pinholes — over the internet auction platform eBay. Each pinhole is sold to another buyer, and the camera is subsequently sent back to the project to be developed and exhibited in its